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The person creating the deception knows it to be false while the receiver of the message has a tendency to believe it (although it is not always the case).<ref name=":9">{{Cite book |last1=Daly |first1=John A. |url=https://books.google.com/books?id=GQxxStcYgFoC&q=deception |title=Strategic Interpersonal Communication |last2=Wiemann |first2=John M. |date=2013-01-11 |publisher=Routledge |isbn=978-1-136-56375-1 |language=en}}</ref> It is often done for personal gain or advantage.<ref name=":10">{{cite web |url=https://dictionary.cambridge.org/us/dictionary/english/deception |title=Definition of 'deception' – English Dictionary |work=[[Cambridge Advanced Learner's Dictionary|Cambridge Dictionary]] |publisher=[[Cambridge University Press]] |access-date=November 11, 2018 }}</ref><ref name=":11">{{cite web |url=https://www.collinsdictionary.com/dictionary/english/deceive |title=Definition of 'deceive' |work=[[Collins English Dictionary]] |publisher=[[HarperCollins]] |access-date=November 11, 2018 }}</ref> Deception can involve dissimulation, propaganda and sleight of hand as well as distraction, camouflage or concealment. There is also [[self-deception]]. It can also be called, with varying subjective implications, beguilement, deceit, bluff, mystification, ruse, or subterfuge. Deception is a major [[relational transgressions|relational transgression]] that often leads to feelings of [[betrayal]] and distrust. Deception violates relational [[Norm (sociology)|rules]] and is considered to be a negative [[wikt:violation|violation]] of expectations. Most people expect friends, relational partners, and even strangers to be truthful most of the time. If people expected most conversations to be untruthful, talking and communicating with others would require distraction and misdirection to acquire reliable information. A significant amount of deception occurs between some [[Romance (love)|romantic]] and relational partners.<ref name="Guerrero, Andersen, & Afifi, 2007">Guerrero, L., Anderson, P., Afifi, W. (2007). Close Encounters: Communication in Relationships (2nd ed.). Los Angeles: Sage Publications.</ref> [[Tort of deceit|Deceit and dishonesty]] can also form grounds for civil litigation in [[tort]], or [[contract law]] (where it is known as [[misrepresentation]] or [[fraudulent misrepresentation]] if deliberate), or give rise to criminal prosecution for [[fraud]]. It also forms a vital part of [[psychological warfare]] in [[denial and deception]]. == Types == === Communication === [[File:Witkiewicz Deception of woman.jpg|thumb|''Deception of woman, with self-portrait'' by [[Stanisław Ignacy Witkiewicz]], 1927 ([[National Museum, Warsaw]])]] Deception includes several types of communications or omissions that serve to distort or omit the whole truth. Examples of deception range from false statements to misleading claims in which relevant information is omitted, leading the receiver to infer false conclusions. For example, a claim that "[[sunflower oil]] is beneficial to brain health due to the presence of [[omega-3 fatty acid]]s" may be misleading, as it leads the receiver to believe sunflower oil will benefit brain health more so than other foods. In fact, sunflower oil is relatively low in omega-3 fatty acids and is not particularly good for brain health, so while this claim is technically true, it leads the receiver to infer false information. Deception itself is intentionally managing verbal or nonverbal messages so that the message receiver will believe in a way that the message sender knows is false. [[Intention|Intent]] is critical with regard to deception. Intent differentiates between deception and an honest mistake. The [[Interpersonal deception theory|Interpersonal Deception Theory]] explores the interrelation between communicative context and sender and receiver cognitions and behaviors in deceptive exchanges. Some forms of deception include: * [[Lie]]s: making up information or giving information that is the opposite or very different from the truth.<ref name=":12">{{cite book |last=Griffith |first=Jeremy |author-link=Jeremy Griffith |year=2011 |title=The Book of Real Answers to Everything! – Why do people lie? |isbn=978-1-74129-007-3 |url=http://www.worldtransformation.com/why-do-people-lie/ }}</ref> * [[Equivocation]]s: making an indirect, ambiguous, or contradictory statement. * [[Lying by omission|Concealments]]: omitting information that is important or relevant to the given context, or engaging in behavior that helps hide relevant information. * [[Exaggerations]]: overstatement or stretching the truth to a degree. * [[Minimisation (psychology)|Understatements]]: minimization or downplaying aspects of the truth.<ref name="Guerrero, Andersen, & Afifi, 2007" /> * Untruths: misinterpreting the truth. Buller and Burgoon (1996) have proposed three taxonomies to distinguish motivations for deception based on their Interpersonal Deception Theory: * Instrumental: to avoid punishment or to protect resources * Relational: to maintain relationships or bonds * Identity: to preserve "face" or the self-image<ref name=":13">{{cite journal |last1=Buller |first1=D. B. |last2=Burgoon |first2=J. K. |title=Interpersonal Deception Theory |journal=Communication Theory |volume=6 |issue=3 |year=1996 |pages=203–242 |doi=10.1111/j.1468-2885.1996.tb00127.x |s2cid=146464264 }}</ref> === Appearance === Simulation consists of exhibiting false information. There are three simulation techniques: [[mimicry]] (copying another model or example, such as non-poisonous snakes which have the colours and markings of poisonous snakes), fabrication (making up a new model), and distraction (offering an alternative model) ==== Mimicry ==== In the biological world, mimicry involves ''unconscious'' deception by similarity to another organism, or to a natural object. Animals for example may deceive predators or prey by [[visual]], [[Sound|auditory]] or other means. ==== Fabrication ==== To make something that appears to be something that it is not, usually for the purpose of encouraging an adversary to reveal, endanger, or divert that adversary's own resources (''i.e.'', as a [[decoy]]). For example, in [[World War II]], it was common for the [[Allies of World War II|Allies]] to use hollow tanks made out of wood to fool German [[reconnaissance]] planes into thinking a large armor unit was on the move in one area while the real tanks were well hidden and on the move in a location far from the fabricated "dummy" tanks. Mock airplanes and fake airfields have also been created. ==== Distraction ==== To get someone's attention from the truth by offering [[bait (luring substance)|bait]] or something else more tempting to divert attention away from the object being concealed. For example, a security company publicly announces that it will ship a large gold shipment down one route, while in reality taking a different route. A military unit trying to maneuver out of a dangerous position may make a [[feint attack]] or fake retreat, to make the enemy think they are doing one thing while in fact they have another goal. ==== Camouflage ==== {{Main|Camouflage}} [[File:Young red necked wallaby.jpg|thumb|upright|This [[wallaby]] has adaptive colouration which allows it to blend with its environment.]] The [[camouflage]] of a physical object often works by breaking up the visual boundary of that object. This usually involves colouring the camouflaged object with the same colours as the background against which the object will be hidden. In the realm of deceptive [[half-truths]], camouflage is realized by 'hiding' some of the truths. [[Military camouflage]] as a form of visual deception is a part of [[military deception]]. Some Allied navies during [[World War II]] used [[dazzle camouflage]] painting schemes to confuse observers regarding a naval vessel's speed and heading, by breaking up the ship's otherwise obvious silhouette. In nature, the defensive mechanisms of most [[octopuses]] to eject black [[ink]] in a large cloud to aid in escape from predators is a form of camouflage. ==== Disguise ==== {{Main|Disguise}} A disguise is an appearance to create the impression of being somebody or something else; for a well-known person this is also called incognito. [[Passing (sociology)|Passing]] involves more than mere dress and can include hiding one's real manner of speech. The fictional detective [[Sherlock Holmes]] often disguised himself as somebody else to avoid being recognized. In a more abstract sense, 'disguise' may refer to the act of disguising the nature of a particular proposal in order to hide an unpopular motivation or effect associated with that proposal. This is a form of political [[Spin (public relations)|spin]] or [[propaganda]], covering the matters of rationalisation and transfer within the [[Propaganda#Techniques|techniques of propaganda generation]]. For example, depicting an act of war (an attack) as a "peace" mission or [[spin (public relations)|"spinning"]] a [[kidnapping]] as a [[protective custody]]. A seventeenth-century story collection, Zhang Yingyu's ''[[The Book of Swindles]]'' (ca. 1617), offers multiple examples of the bait-and-switch and fraud techniques involving the stimulation of greed in Ming-dynasty China.<ref>{{cite book|url=https://cup.columbia.edu/book/the-book-of-swindles/9780231178631|title=Book of Swindles|publisher=Columbia University Press|date=September 2017 |isbn=978-0-231-54564-8 |last1=Zhang |first1=Yingyu }}</ref> == In romantic relationships == [[File:Edward Burne-Jones - The Beguiling of Merlin.jpg|thumb|''[[The Beguiling of Merlin]]'', by [[Edward Burne-Jones]], 1874]] Deception is particularly common within romantic relationships, with more than 90% of individuals admitting to lying or not being completely honest with their partner at one time.<ref name="Cole">{{cite journal |last=Cole |first=T. |s2cid=44014065 |year=2001 |title=Lying to the one you love: The use of deceptions in romantic relationships |journal=Journal of Social and Personal Relationships |volume=18 |issue=1 |pages=107–129 |doi=10.1177/0265407501181005 }}</ref> There are three primary motivations for deception in relationships. {| class="wikitable" |- !Reasons for deceiving !Description |- | '''Partner-focused motives''' | Using deception to avoid hurting the partner, to help the partner to enhance or maintain their [[self-esteem]], to avoid worrying the partner, and to protect the partner's relationship with a third party.<ref name=":1">{{cite journal |last1=Guthrie |first1=J. |last2=Kunkel |first2=A. |year=2013 |title=Tell me sweet (and not-so-sweet) little lies: Deception in romantic relationships |journal=Communication Studies |volume=64 |issue=2 |pages=141–157 |doi=10.1080/10510974.2012.755637 |s2cid=53677161 }}</ref><ref name=":2">{{cite journal |last1=Boon |first1=S. D. |last2=McLeod |first2=B. A. |year=2001 |title=Deception in Romantic Relationships: Subjective Estimates of Success at Deceiving and Attitudes toward Deception |journal=Journal of Social and Personal Relationships |volume=18 |issue=4 |pages=463–476 |doi=10.1177/0265407501184002 |s2cid=144821127 }}</ref><ref>{{cite journal |last1=Lemay |first1=E. P. |last2=Bechis |first2=M. A. |last3=Martin |first3=J. |last4=Neal |first4=A. M. |last5=Coyne |first5=C. |year=2013 |title=Concealing negative evaluations of a romantic partner's physical attractiveness |journal=Personal Relationships |volume=20 |issue=4 |pages=669–689 |doi=10.1111/pere.12007 }}</ref> Partner-focused motivated deception can sometimes be viewed as socially polite and relationally beneficial, such as telling white lies to avoid hurting your partner. Although other, less common, partner-focused motives such as using to deception to evoke jealous reactions from their partner may have damaging effects on a relationship.<ref name=":1" /><ref>{{cite journal |last1=Sheets |first1=V. L. |last2=Fredendall |first2=L. L. |last3=Claypool |first3=H. M. |year=1997 |title=Jealousy evocation, partner reassurance, and relationship stability: An exploration of the potential benefits of jealousy |journal=Evolution and Human Behavior |volume=18 |issue=6 |pages=387–402 |doi=10.1016/S1090-5138(97)00088-3 }}</ref> |- | '''Self-focused motives''' | Using deception to enhance or protect one's own [[self-image]], maintain or establish their autonomy, avoid constrictions, unwanted activities, or impositions, shield themselves from [[anger]], [[embarrassment]], or [[criticism]], or resolve an argument.<ref name="Cole" /><ref name=":1" /><ref name=":2" /> Another common self-focused motive for deception, is a continuation of deception in order to avoid being caught in a previous deception.<ref name=":1" /> Self-focused deception is generally perceived as a more serious transgression than partner-focused deception, because the deceiver is acting for selfish reasons rather than for the good of the partner or relationship. |- | '''Relationship-focused motives''' | Using deception to limit relationship harm by avoiding conflict or relational trauma.<ref name=":1" /> Relationally motivated deception can be beneficial to a relationship, and other times it can be harmful by further complicating matters. Deception may also be used to facilitate the dissolution of an unwanted relationship.<ref name="Cole" /> |} Deception impacts the perception of a relationship in a variety of ways, for both the deceiver and the deceived. The deceiver typically perceives less understanding and intimacy from the relationship, in that they see their partner as less empathetic and more distant.<ref name=":3">{{cite journal |last1=DePaulo |first1=B. M. |last2=Kashy |first2=D. A. |s2cid=20626244 |year=1998 |title=Everyday lies in close and casual relationships |journal=Journal of Personality and Social Psychology |volume=74 |issue=1 |pages=63–79 |doi=10.1037/0022-3514.74.1.63 |pmid=9457776 }}</ref> The act of deception can also result in feelings of distress for the deceiver, which become worse the longer the deceiver has known the deceived, as well as in longer-term relationships. Once discovered, deception creates feelings of detachment and uneasiness surrounding the relationship for both partners; this can eventually lead to both partners becoming more removed from the relationship or deterioration of the relationship.<ref name="Cole" /> In general, discovery of deception can result in a decrease in relationship satisfaction and commitment level, however, in instances where a person is successfully deceived, relationship satisfaction can actually be positively impacted for the person deceived, since lies are typically used to make the other partner feel more positive about the relationship. In general, deception tends to occur less often in relationships with higher satisfaction and commitment levels and in relationships where partners have known each other longer, such as long-term relationships and marriage.<ref name="Cole" /> In comparison, deception is more likely to occur in casual relationships and in dating where commitment level and length of acquaintanceship is often much lower.<ref name=":3" /><ref name=":14">{{cite journal |last1=Rowatt |first1=W. C. |last2=Cunninghan |first2=M. R. |last3=Druen |first3=P. B. |year=1998 |title=Deception to get a date |journal=Personality and Social Psychology Bulletin |volume=24 |issue=11 |pages=1228–1242 |doi=10.1177/01461672982411009 |s2cid=144546956 }}</ref> === Deception and infidelity === {{Main|Infidelity}} Unique to exclusive romantic relationships is the use of deception in the form of infidelity. When it comes to the occurrence of infidelity, there are many individual difference factors that can impact this behavior. Infidelity is impacted by [[Attachment theory|attachment style]], relationship satisfaction, [[Executive functions|executive function]], [[sociosexual orientation]], personality traits, and [[Infidelity#Gender differences|gender]]. Attachment style impacts the probability of infidelity and research indicates that people with an insecure [[Attachment theory|attachment style]] (anxious or avoidant) are more likely to cheat compared to individuals with a secure attachment style,<ref name=":15">{{cite journal |last1=DeWall |first1=C. N. |last2=Lambert |first2=N. M. |last3=Slotter |first3=E. B. |last4=Pond |first4=R. S. Jr. |last5=Deckman |first5=T. |last6=Finkel |first6=E. J. |last7=Luchies |first7=L. B. |last8=Fincham |first8=F. D. |s2cid=16982198 |year=2011 |title=So Far Away From One's Partner, Yet So Close to Romantic Alternatives: Avoidant Attachment, Interest in Alternatives, and Infidelity |journal=Journal of Personality and Social Psychology |volume=101 |issue=6 |pages=1302–1316 |doi=10.1037/a0025497 |pmid=21967006 }}</ref> especially for avoidant men and anxious women.<ref name=":16">{{cite journal |last1=Allen |first1=E. S. |last2=Baucom |first2=D. H. |year=2004 |title=Adult Attachment and Patterns of Extradyadic Involvement |journal=Family Process |volume=43 |issue=4 |pages=467–488 |doi=10.1111/j.1545-5300.2004.00035.x |pmid=15605979 |doi-access=free }}</ref> Insecure attachment styles are characterized by a lack of comfort within a romantic relationship resulting in a desire to be overly independent (avoidant attachment style) or a desire to be overly dependent on their partner in an unhealthy way (anxious attachment style). Those with an insecure attachment style are characterized by not believing that their romantic partner can/will support and comfort them in an effective way, either stemming from a negative belief regarding themselves (anxious attachment style) or a negative belief regarding romantic others (avoidant attachment style). Women are more likely to commit infidelity when they are emotionally unsatisfied with their relationship whereas men are more likely to commit infidelity if they are sexually unsatisfied with their current relationship.<ref name=":6">{{cite journal |last1=Barta |first1=W. D. |last2=Kiene |first2=S. M. |year=2005 |title=Motivations for infidelity in heterosexual dating couples: The roles of gender, personality differences, and sociosexual orientation |journal=Journal of Social and Personal Relationships |volume=22 |issue=3 |pages=339–360 |doi=10.1177/0265407505052440 |s2cid=145727447 }}</ref> Women are more likely to commit emotional infidelity than men while men are more likely to commit sexual infidelity than women; however, these are not mutually exclusive categories as both men and women can and do engage in emotional or sexual infidelity.<ref name=":6" /> Executive control is a part of [[executive functions]] that allows for individuals to monitor and control their behavior through thinking about and managing their actions. The level of executive control that an individual possesses is impacted by development and experience and can be improved through training and practice.<ref>{{cite journal |last1=Diamond |first1=A. |last2=Lee |first2=K. |year=2011 |title=Interventions shown to aid executive function development in children 4 to 12 years old |journal=[[Science (journal)|Science]] |volume=333 |issue=6045 |pages=959–964 |doi=10.1126/science.1204529 |pmid=21852486 |pmc=3159917 |bibcode=2011Sci...333..959D }}</ref><ref>{{cite journal |last=Klingberg |first=T. |year=2010 |title=Training and plasticity of working memory |journal=Trends in Cognitive Sciences |volume=14 |issue=7 |pages=317–324 |doi=10.1016/j.tics.2010.05.002 |pmid=20630350 |s2cid=17438995 }}</ref> Those individuals that show a higher level of executive control can more easily influence/control their thoughts and behaviors in relation to potential threats to an ongoing relationship which can result in paying less attention to threats to the current relationship (other potential romantic mates).<ref>{{cite journal |last1=Pronk |first1=T. M. |last2=Karremans |first2=J. C. |last3=Wigboldus |first3=D. H. J. |year=2011 |title=How can you resist? Executive control helps romantically involved individuals to stay faithful |journal=Journal of Personality and Social Psychology |volume=100 |issue=5 |pages=827–837 |doi=10.1037/a0021993 |pmid=21244181 |hdl=2066/99390 |hdl-access=free }}</ref> [[Sociosexual orientation]] is concerned with how freely individuals partake in casual sex outside of a committed relationship and their beliefs regarding how necessary it is to be in love in order to engage in sex with someone.<ref name=":7">{{cite journal |last1=Simpson |first1=J. A. |last2=Gangestad |first2=S. W. |year=1991 |title=Individual differences in sociosexuality: Evidence for convergent and discriminant validity |journal=Journal of Personality and Social Psychology |volume=60 |issue= 6|pages=870–883 |doi=10.1037/0022-3514.60.6.870 |pmid=1865325 }}</ref> Individuals with a less restrictive [[sociosexual orientation]] (more likely to partake in casual sex) are more likely to engage in infidelity.<ref name=":6" /><ref name=":7" /> Individuals that have personality traits including (high) neuroticism, (low) agreeableness, and (low) conscientiousness are more likely to commit infidelity.<ref name=":6" /> Men are generally speculated to cheat more than women, but it is unclear if this is a result of socialization processes where it is more acceptable for men to cheat compared to women or due to an actual increase in this behavior for men.<ref name=":8">{{cite journal |last1=Conley |first1=T. D. |last2=Moors |first2=A. C. |last3=Matsick |first3=J. L. |last4=Ziegler |first4=A. |last5=Valentine |first5=B. A. |s2cid=109937245 |year=2011 |title=Women, men, and the bedroom: Methodological and conceptual insights that narrow, reframe, and eliminate gender differences in sexuality |journal=Current Directions in Psychological Science |volume=20 |issue= 5|pages=296–300 |doi=10.1177/0963721411418467 }}</ref> Research conducted by Conley and colleagues (2011) suggests that the reasoning behind these gender differences stems from the negative stigma associated with women who engage in casual sex and inferences about the sexual capability of the potential sexual partner. In their study, men and women were equally likely to accept a sexual proposal from an individual who was speculated to have a high level of sexual prowess. Additionally, women were just as likely as men to accept a casual sexual proposal when they did not anticipate being subjected to the negative stigma of sexually permissible women as slutty.<ref name=":8" /> === Online dating deceptions === {{Main|Online dating}} {{See also|Catfishing}} Research on the use of deception in online dating has shown that people are generally truthful about themselves with the exception of physical attributes to appear more attractive.<ref name=":4">{{Cite web|url=https://www.psychologytoday.com/us/blog/close-encounters/201407/can-you-really-trust-the-people-you-meet-online|title=Can You Really Trust the People You Meet Online? &#124; Psychology Today|website=www.psychologytoday.com}}</ref><ref>{{Cite web|url=http://www.scienceofrelationships.com/home/2015/5/14/mythbusting-online-dating.html|title=Myth-busting online dating|date=May 14, 2015}}</ref><ref>{{Cite web|url=https://www.psychologytoday.com/us/blog/let-their-words-do-the-talking/201111/detecting-deception-in-online-profiles|title=Detecting Deception in Online Profiles &#124; Psychology Today|website=www.psychologytoday.com}}</ref> According to the Scientific American, "nine out of ten online daters will fib about their height, weight, or age" such that men were more likely to lie about height while women were more likely to lie about weight.<ref>{{Cite news|url=http://blogs.scientificamerican.com/anthropology-in-practice/catfishing-the-truth-about-deception-online/|title=Catfishing: The truth about deception online|newspaper=Scientific American Blog Network|last1=d'Costa|first1=Krystal}}</ref> In a study conducted by Toma and Hancock, "less attractive people were found to be more likely to have chosen a profile picture in which they were significantly more attractive than they were in everyday life".<ref name=":5">{{Cite web|url=http://bigthink.com/dollars-and-sex/big-fat-liars-less-attractive-people-have-more-deceptive-online-dating-profiles|title=Big fat liars: Less attractive people have more deceptive online dating profiles|date=December 9, 2011}}</ref> Both genders used this strategy in online dating profiles, but women more so than men.<ref name=":5" /> Additionally, less attractive people were more likely to have "lied about objective measures of physical attractiveness such as height and weight".<ref name=":5" /> In general, men are more likely to lie on dating profiles the one exception being that women are more likely to lie about weight.<ref name=":4" /> == In business == People who negotiate feel more tempted to use deceit. In negotiation, it includes both parties to trust and respect one another. In negotiations, one party is unaware of what is going on in the other side of the thing that needs to be negotiated. Deception in negotiation comes in many forms, and each has its reaction (Gaspar et al.,2019).<ref name="Gaspar 62–81">{{Cite journal|last1=Gaspar|first1=Joseph P.|last2=Methasani|first2=Redona|last3=Schweitzer|first3=Maurice|date=February 2019|title=Fifty Shades of Deception: Characteristics and Consequences of Lying in Negotiations|url=http://journals.aom.org/doi/10.5465/amp.2017.0047|journal=Academy of Management Perspectives|language=en|volume=33|issue=1|pages=62–81|doi=10.5465/amp.2017.0047|s2cid=149085360|issn=1558-9080}}</ref> * Price reservation: Not stating the real budget or price that one has in mind. * Misrepresentation of interests: Getting interests if the buyer seems desperate. * Fabrication of facts: This is the most immoral part, where the person lies about materials, misleading information to get a sale. * Omitting relevance: Not stating something that is helpful to know: for example, a car can be like new but it does not help if the seller omits the fact that there is a problem with the transmission.<ref name="Gaspar 62–81" /> == In journalism == Journalistic deception ranges from passive activities (i.e. [[undercover journalism|blending into]] a civil rights march) to active deception (i.e. falsely identifying oneself over the telephone, getting hired as a worker at a mental hospital).<ref name="braun:88">{{cite journal |last1=Braun |first1=Paul |title=Deception in journalism: 1987 Undergraduate Division Winner of the Carol Burnett/University of Hawaii/AEJMC Student Papers in Journalism Ethics |journal=Journal of Mass Media Ethics |date=January 1988 |volume=3 |issue=1 |pages=77–83 |doi=10.1080/08900528809358312}}</ref> Paul Braun says that the journalist does not stand apart from the rest of the populace in the use of deception.<ref name="braun:88" /> == In law == {{Main|Tort of deceit}} For legal purposes, [[tort of deceit|deceit]] is a [[tort]] that occurs when a person makes a factual misrepresentation, knowing that it is false (or having no belief in its truth and being reckless as to whether it is true) and intending it to be relied on by the recipient, and the recipient acts to his or her detriment in reliance on it. Deceit may also be grounds for legal action in [[contract law]] (known as [[misrepresentation]], or if deliberate, [[fraudulent misrepresentation]]), or a criminal prosecution, on the basis of [[fraud]]. == In government == The use of deception by a government is typically frowned upon unless it is in reference to military operations. These terms refer to the means by which governments employ deception: * [[wikt:subterfuge|Subterfuge]] – in the case of disguise and disguised movement * [[Secrecy]] – in the fortification of communications and in the fortified concealing of documents. * [[Propaganda]] – somewhat controversial label for what governments produce in the way of controlled information and message in media documents and communications. * [[Fake news]] – in criminal investigations, the delivery of information to the public, the deliberate transformation of certain key details. * [[Misinformation]] – similar to the above, but unconfined to criminal investigations. * [[Military secret]] – secrecy for military operations ** [[False flag]] – military operations that deal with deception as their main component. == In religion == Deception is a common topic in religious discussions. Some sources focus on how religious texts deal with deception. But, other sources focus on the deceptions created by the religions themselves. For example, Ryan McKnight is the founder of an organization called FaithLeaks. He stated that the organizations "goal is to reduce the amount of deception and untruths and unethical behaviors that exist in some facets of religion".<ref>Ruth Graham, [https://slate.com/technology/2018/01/a-new-wikileaks-for-religion-publishes-its-first-trove-of-documents.html "A New "Wikileaks for Religion" Publishes Its First Trove of Documents"], ''Slate'', January 12, 2018</ref> === Christianity === {{Further|Mental reservation#Mentalis restrictio in moral theology|Christian views on lying}} === Islam === {{Main|Taqiya}} In general, Islam never allows deception and lie. Prophet [[Muhammad]] said, "He who deceives is not of me (is not my follower)".<ref>{{Cite web|url=https://sunnah.com/muslim:102|title=Sahih Muslim 102 – The Book of Faith - كتاب الإيمان - Sunnah.com – Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم)|website=sunnah.com}}</ref> However, there are some exceptions, especially in case of war or peace making or in case of safeguarding one's faith.<ref>{{Cite web|url=https://wikiislam.net/wiki/Qur'an,_Hadith_and_Scholars:Lying_and_Deception|title=Qur'an, Hadith and Scholars:Lying and Deception|website=WikiIslam}}</ref> For an example, [[Taqiya]] is an Islamic juridical term for the cases in which a Muslim is allowed to lie under the circumstance when need to deny their faith due to force or when faced with persecution.<ref>{{cite encyclopedia |title=Taqīyah |author=Paul E. Walker |encyclopedia=The Oxford Encyclopedia of the Islamic World |publisher=Oxford University Press |location=Oxford |year=2009 |url=http://www.oxfordreference.com/view/10.1093/acref/9780195305135.001.0001/acref-9780195305135-e-0784 |url-access=subscription |quote=Taqīyah is the precautionary dissimulation of religious belief and practice in the face of persecution. |isbn=978-0-19-530513-5 }}</ref> The concept mainly followed by Shi'ite sect, but it varies "significantly among Islamic sects, scholars, countries, and political regimes", and has been evoked by [[criticism of Islam|critics of Islam]] to portray the faith allowing dishonesty.<ref>Mariuma, Yarden. "Taqiyya as Polemic, Law and Knowledge: Following an Islamic Legal Term through the Worlds of Islamic Scholars, Ethnographers, Polemicists and Military Men." The Muslim World 104.1–2 (2014): 89–108.</ref> == In philosophy == Deception is a recurring theme in modern philosophy. In 1641 Descartes published his [[Descarte's meditations|meditations]], in which he introduced the notion of the [[Deus deceptor]], a posited being capable of deceiving the thinking [[wikt:ego|ego]] about [[reality]]. The notion was used as part of his [[hyperbolic doubt]], wherein one decides to doubt everything there is to doubt. The Deus deceptor is a mainstay of so-called [[skeptical]] arguments, which purport to put into question our knowledge of reality. The punch of the argument is that all we know might be wrong, since we might be deceived. [[Stanley Cavell]] has argued that all skepticism has its root in this fear of deception. == In psychological research == Psychological research often needs to deceive the subjects as to its actual purpose. The rationale for such deception is that humans are sensitive to how they appear to others (and to themselves) and this self-consciousness might interfere with or distort from how they actually behave outside of a research context (where they would not feel they were being scrutinized). For example, if a psychologist is interested in learning the conditions under which students cheat on tests, directly asking them, "how often do you cheat?", might result in a high percent of "socially desirable" answers and the researcher would, in any case, be unable to verify the accuracy of these responses. In general, then, when it is unfeasible or naive to simply ask people directly why or how often they do what they do, researchers turn to the use of deception to distract their participants from the true behavior of interest. So, for example, in a study of cheating, the participants may be told that the study has to do with how intuitive they are. During the process, they might be given the opportunity to look at (secretly, they think) another participant's [presumably highly intuitively correct] answers before handing in their own. At the conclusion of this or any research involving deception, all participants must be told of the true nature of the study and why deception was necessary (this is called debriefing). Moreover, it is customary to offer to provide a summary of the results to all participants at the conclusion of the research. Though commonly used and allowed by the ethical guidelines of the American Psychological Association, there has been debate about whether or not the use of deception should be permitted in psychological research [[experiment]]s. Those against deception object to the ethical and methodological issues involved in its use. Dresser (1981) notes that, ethically, researchers are only to use subjects in an experiment after the subject has given informed consent. However, because of its very nature, a researcher conducting a deception experiment cannot reveal its true purpose to the subject, thereby making any consent given by a subject misinformed (p.&nbsp;3). [[Diana Baumrind|Baumrind]] (1964), criticizing the use of deception in the [[Milgram experiment|Milgram (1963) obedience experiment]], argues that deception experiments inappropriately take advantage of the implicit trust and obedience given by the subject when the subject volunteers to participate (p.&nbsp;421). From a practical perspective, there are also methodological objections to deception. Ortmann and Hertwig (1998) note that "deception can strongly affect the reputation of individual labs and the profession, thus contaminating the participant pool" (p.&nbsp;806). If the subjects in the experiment are suspicious of the researcher, they are unlikely to behave as they normally would, and the researcher's control of the experiment is then compromised (p.&nbsp;807). Those who do not object to the use of deception note that there is always a constant struggle in balancing "the need for conducting research that may solve social problems and the necessity for preserving the dignity and rights of the research participant" (Christensen, 1988, p.&nbsp;670). They also note that, in some cases, using deception is the only way to obtain certain kinds of information, and that prohibiting all deception in research would "have the egregious consequence of preventing researchers from carrying out a wide range of important studies" (Kimmel, 1998, p.&nbsp;805). Additionally, findings suggest that deception is not harmful to subjects. Christensen's (1988) review of the literature found "that research participants do not perceive that they are harmed and do not seem to mind being misled" (p.&nbsp;668). Furthermore, those participating in experiments involving deception "reported having enjoyed the experience more and perceived more educational benefit" than those who participated in non-deceptive experiments (p.&nbsp;668). Lastly, it has also been suggested that an unpleasant treatment used in a deception study or the unpleasant implications of the outcome of a deception study may be the underlying reason that a study using deception is perceived as unethical in nature, rather than the actual deception itself (Broder, 1998, p.&nbsp;806; Christensen, 1988, p.&nbsp;671). == In social research == Some methodologies in social research, especially in [[psychology]], involve deception. The researchers purposely mislead or misinform the participants about the true nature of the experiment. In an experiment conducted by [[Stanley Milgram]] in 1963 the researchers told participants that they would be participating in a scientific study of memory and learning. In reality the study looked at the participants' willingness to obey commands, even when that involved inflicting pain upon another person. After the study, the subjects were informed of the true nature of the study, and steps were taken in order to ensure that the subjects left in a state of well-being.<ref>{{cite journal|last=Milgram|first=Stanley|title=Behavioral Study of Obedience|journal=Journal of Abnormal and Social Psychology|year=1963|volume=67|issue=4|pages=371–378|doi=10.1037/h0040525|pmid=14049516|citeseerx=10.1.1.599.92|s2cid=18309531 }}</ref> Use of deception raises many problems of [[research ethics]] and it is strictly regulated by professional bodies such as the [[American Psychological Association]]. == In computer security == {{Main|Phishing|Deception technology}} == Online disinhibition == Deception occurs not only in real life, but also online. Through mediated communication, a type of communication exchanged through online platforms such as social media and [[mass media]] like radios and magazines, deceiving messages can be spread online. With the Online Disinhibition Theory, a person may not feel the need to censor their communication because of the online environment. This often occurs due to the idea that on the internet, no one can physically know whether the communication one is using is true or not. &nbsp; This can lead to falsehoods since communication is not occurring face-to-face, making it difficult to perceive the words of other people. Online Disinhibition typically occurs on social media such as group chats or online games. Although not always, people are able to portray themselves as a different person than reality because of the lack of face-to face communication which allows them to fit in with a specific group they wish to be a part of.<ref name=":13" /> As technology continues to expand, deception online is common to see. Digital deception is widely used within different forms of technology to misrepresent someone or something.<ref name=":14" /> Through digital deception, people are easily capable of deceiving others whether it be for their own benefit or to ensure their safety. One form of digital deception is catfishing. By creating a false identity catfishers deceive those online to build relationships, friendships, or connections without revealing who they truly are as a person. They do so by creating an entirely new account that has made up information allowing them to&nbsp; portray themselves as a different person. Most lies and misinformation are spread commonly through emails and [[instant messaging]] since these messages are erased faster.<ref name=":15" /> Without face to face communication, it could be easier to deceive others, making it difficult to detect the truth from a lie.&nbsp; These unreliable cues allow digital deception to easily influence and mislead others.<ref name=":16" />{{Empty section|date=December 2021}} == Double bluff == Double bluffing is a deceptive scenario, in which the deceiver tells truth to a person about some subject, but makes the person think that the deceiver is lying.<ref>{{cite web|last=|first=|title=double bluff|website=cambridge.org|publisher=Cambridge University Press|date=|url=https://dictionary.cambridge.org/dictionary/english/double-bluff|access-date=2024-05-05}}</ref><ref>{{cite web|last=|first=|title=Definition of 'double bluff'|website=collinsdictionary.com|publisher=HarperCollins Publishers Limited|date=|url=https://www.collinsdictionary.com/dictionary/english/double-bluff|access-date=2024-05-05}}</ref><ref>{{cite web|last=|first=|title=double bluff|website=ldoceonline.com|publisher=Longman Dictionary of Contemporary English|date=|url=https://www.ldoceonline.com/dictionary/double-bluff|access-date=2024-05-05}}</ref><ref>{{cite web|last=|first=|title=double bluff noun|website=oxfordlearnersdictionaries.com|publisher=Oxford University Press|date=|url=https://www.oxfordlearnersdictionaries.com/definition/american_english/double-bluff|access-date=2024-05-05}}</ref> In poker, the term double bluff refers to a situation in which the deceiving player is trying to bluff with bad cards, then gets re-raised by the opponent, and then re-raises again in the hopes that the enemy player folds.<ref>{{cite web|last=|first=|title=Double Bluff|website=pokerzone.com|publisher=Casino City|date=|url=https://www.pokerzone.com/dictionary/double-bluff|access-date=2024-05-05}}</ref> This strategy works best on opponents who easily fold under pressure.<ref>{{cite web|last=|first=|title=Double Bluff|website=pokernews.com|publisher=iBus Media Limited|date=|url=https://www.pokernews.com/pokerterms/double-bluff.htm|access-date=2024-05-05}}</ref> == Deception detection == Deception detection is extremely difficult unless it is a blatant or obvious lie or contradicts something the other knows to be true. While it is difficult to deceive a person over a long period of time, deception often occurs in day-to-day conversations between relational partners.<ref name="Guerrero, Andersen, & Afifi, 2007" /> Detecting deception is difficult because there are no known completely reliable indicators of deception and because people often reply on a [[Truth-default theory|truth-default]] state. Deception, however, places a significant cognitive load on the deceiver. He or she must recall previous statements so that his or her story remains consistent and believable. As a result, deceivers often leak important information both verbally and [[non verbal communication|nonverbally]]. Deception and its detection is a complex, fluid, and cognitive process that is based on the context of the message exchange. The [[interpersonal deception theory]] posits that interpersonal deception is a dynamic, iterative process of mutual influence between a sender, who [[Manipulation (psychology)|manipulates]] information to depart from the truth, and a receiver, who attempts to establish the validity of the message.<ref>Buller & Burgoon, 1996</ref> A deceiver's actions are interrelated to the message receiver's actions. It is during this exchange that the deceiver will reveal verbal and nonverbal information about deceit.<ref>Burgoon & Qin, 2006</ref> Some research has found that there are some cues that may be correlated with deceptive communication, but scholars frequently disagree about the effectiveness of many of these cues to serve as reliable indicators.<ref>Ziano, I., & Wang, D. (2021). Slow lies: Response delays promote perceptions of insincerity. ''Journal of Personality and Social Psychology''. Advance online publication. https://doi.org/10.1037/pspa0000250</ref> A cross cultural study conducted to analyze human behavior and deception concluded detecting deception often has to do with the judgements of a person and how they interpret [[Nonverbal cues|non-verbal cues.]] One's personality can influence these judgements also as some people are more confident in deceiving compared to others.<ref name=":0">{{Cite web |title=Perusall |url=https://app.perusall.com/courses/live-online-fundamentals-of-speech-communication-aa-2023-fall-full-term-spc1017-126/choices-and-connections-an-introduction-to-communication-632896321?chapter=cb9b2c9361c23115bf2fb21b56494143 |access-date=2023-12-12 |website=app.perusall.com}}</ref> Noted deception scholar Aldert Vrij even states that there is no nonverbal behavior that is uniquely associated with deception.<ref name="Vrij, 2008">Vrij, 2008</ref> As previously stated, a specific behavioral indicator of deception does not exist. There are, however, some nonverbal behaviors that have been found to be correlated with deception. Vrij found that examining a "cluster" of these cues was a significantly more reliable indicator of deception than examining a single cue.<ref name="Vrij, 2008" /> Many people believe that they are good at deception, though this confidence is often misplaced.<ref>{{Cite journal | last1 = Grieve | first1 = Rachel | last2 = Hayes | first2 = Jordana | date = January 1, 2013 | title = Does perceived ability to deceive = ability to deceive? Predictive validity of the perceived ability to deceive (PATD) scale | journal = Personality and Individual Differences | volume = 54| issue = 2| pages = 311–314 | doi = 10.1016/j.paid.2012.09.001| doi-access = free}}</ref> Deception detection can decrease with increased empathy.<ref name="b741"/> [[Emotion]] recognition training does not affect the ability to detect deception.<ref name="b741">{{cite journal | last=Zloteanu | first=Mircea | last2=Bull | first2=Peter | last3=Krumhuber | first3=Eva G | last4=Richardson | first4=Daniel C | title=Veracity judgement, not accuracy: Reconsidering the role of facial expressions, empathy, and emotion recognition training on deception detection | journal=Quarterly Journal of Experimental Psychology | volume=74 | issue=5 | date=2021 | issn=1747-0218 | pmid=33234008 | pmc=8056713 | doi=10.1177/1747021820978851 | pages=910–927}}</ref> [[Mark G. Frank|Mark Frank]] proposes that deception is detected at the cognitive level.<ref>{{cite book |last1=Frank |first1=M. G. |last2=O'Sullivan |first2=M. |last3=Menasco |first3=M. A. |year=2009 |chapter=Human Behavior and Deception Detection |editor-first=J. G. |editor-last=Voeller |title=Handbook of Science and Technology for Homeland Security |location=New York |publisher=John Wiley & Sons |doi=10.1002/9780470087923.hhs299 |isbn=978-0-471-76130-3 |citeseerx=10.1.1.177.9157 }}</ref> Lying requires deliberate conscious behavior, so listening to speech and watching body language are important factors in detecting lies. If a response to a question has a lot disturbances, less talking time, repeated words, and poor logical structure, then the person may be lying. Vocal cues such as frequency height and variation may also provide meaningful clues to deceit.<ref>{{cite journal |last1=Rockwell |first1=P. A. |last2=Buller |first2=D. B. |last3=Burgoon |first3=J. K. |title=Measurement of deceptive voices: Comparing acoustic and perceptual data |journal=Applied Psycholinguistics |volume=18 |year=1997 |issue=4 |pages=471–484 |doi=10.1017/S0142716400010948 |s2cid=144615784 }}</ref> Fear specifically causes heightened arousal in liars, which manifests in more frequent blinking, pupil dilation, speech disturbances, and a higher pitched voice. The liars that experience guilt have been shown to make attempts at putting distance between themselves and the deceptive communication, producing "nonimmediacy cues" These can be verbal or physical, including speaking in more indirect ways and showing an inability to maintain eye contact with their conversation partners.<ref>{{cite book |last1=Zuckerman |first1=M. |last2=DePaulo |first2=B. M. |last3=Rosenthal |first3=R. |title=Verbal and Nonverbal Communication of Deception |journal=Advances in Experimental Social Psychology |volume=14 |year=1981 |pages=1–59 |doi=10.1016/S0065-2601(08)60369-X |isbn=978-0-12-015214-8 }}</ref> Another cue for detecting deceptive speech is the tone of the speech itself. Streeter, Krauss, Geller, Olson, and Apple (1977) have assessed that fear and anger, two emotions widely associated with deception, cause greater arousal than grief or indifference, and note that the amount of stress one feels is directly related to the frequency of the voice.<ref>{{cite journal |last1=Streeter |first1=L. A. |last2=Krauss |first2=R. M. |last3=Geller |first3=V. |last4=Olson |first4=C. |last5=Apple |first5=W. |title=Pitch changes during attempted deception |journal=Journal of Personality and Social Psychology |volume=35 |issue=5 |year=1977 |pages=345–350 |doi=10.1037/0022-3514.35.5.345 |pmid=874738 }}</ref> == See also ==  {{columns-list|colwidth=15em| * [[Academic dishonesty]] * [[Big lie]] * [[Communications deception]] * [[Crowd manipulation]] * [[Deception (criminal law)]] * [[Deception in animals]] * [[Electronic deception]] * [[Evasion (ethics)]] * [[Fear, uncertainty and doubt]] * [[Forgery]] * [[Hoax]] * [[Limited hangout]] * [[Media transparency]] * [[Misdirection (disambiguation)]] * [[Placebo]] * [[Plagiarism]] * [[Smoke and mirrors]] * [[Sting operation]] * [[Swampland in Florida]] }} == References == === Citations === {{Reflist}} === General and cited sources === {{refbegin}} * American Psychological Association – [http://www.apa.org/ethics/code/index.aspx?item=11 Ethical principles of psychologists and code of conduct]. (2010). Retrieved February 7, 2013. * Bassett, Rodney L.; Basinger, David; & Livermore, Paul. (1992, December). Lying in the Laboratory: Deception in Human Research from a Psychological, Philosophical, and Theological Perspectives. [https://web.archive.org/web/20090101073837/http://www.asa3.org/ASA/topics/ethics/JASA12-82Bassett.html ASA3.org] * Baumrind, D. (1964). Some thoughts on ethics of research: After reading Milgram's "Behavioral Study of Obedience." ''[[American Psychologist]], 19''(6), 421–423. Retrieved February 21, 2008, from the PsycINFO database. * {{cite book |author=Behrens, Roy R. |author-link=Roy Behrens |year=2002 |title = False colors: Art, Design and Modern Camouflage |publisher=Bobolink Books |isbn=978-0-9713244-0-4 }} * [[Roy Behrens|Behrens, Roy R.]] (2009). ''Camoupedia: A Compendium of Research on Art, Architecture and Camouflage''. Bobolink Books. {{ISBN|978-0-9713244-6-6}}. * {{cite book |author1=Blechman, Hardy |author2=Newman, Alex |year=2004|title=DPM: Disruptive Pattern Material|publisher=DPM Ltd |isbn=978-0-9543404-0-7 }} * Bröder, A. (1998). Deception can be acceptable. ''American Psychologist, 53''(7), 805–806. Retrieved February 22, 2008, from the PsycINFO database. * {{cite journal | last1 = Christensen | first1 = L | year = 1988 | title = Deception in psychological research: When is its use justified? | journal = Personality and Social Psychology Bulletin | volume = 14 | issue = 4| pages = 664–675 | doi = 10.1177/0146167288144002 | s2cid = 145114044 }} * {{cite book |author = Cohen, Fred. |year=2006 |title = Frauds, Spies, and Lies and How to Defeat Them |publisher=ASP Press |isbn = 978-1-878109-36-1 |title-link=Fraud }} * Dresser, R. S. (1981). Deception research and the HHS final regulations. ''IRB: Ethics and Human Research, 3''(4), 3–4. Retrieved February 21, 2008, from the [[JSTOR]] database. * Edelman, Murray ''Constructing the political spectacle'' 1988 * {{cite book |last=Edelman|first=Murray |title = The Politics of Misinformation |url = https://books.google.com/books?id=_5m4CaAvcEoC |year=2001 |publisher=Cambridge University Press |isbn=978-0-521-80510-0}}. * Kimmel, A. J. (1998). "In defense of deception". ''American Psychologist'', 53(7), 803–805. Retrieved February 22, 2008, from the [[PsycINFO]] database. * {{cite book|author=Latimer, Jon |year=2001|title=Deception in War|publisher=John Murray|isbn=978-0-7195-5605-0}} * Milgram, S. (1963). "Behavioral study of obedience". ''The Journal of Abnormal and Social Psychology'', 67(4), 371–378. Retrieved February 25, 2008 from the PsycARTICLES database. * Ortmann, A. & Hertwig, R. (1998). "The question remains: Is deception acceptable?" ''American Psychologist'', 53(7), 806–807. Retrieved February 22, 2008, from the PsycINFO database. * Shaughnessy, J. J., Zechmeister, E. B., & Zechmeister, J. S. (2006). ''Research Methods in Psychology'' (Seventh Edition). Boston: [[McGraw Hill]]. * [[Bruce Schneier]], ''[[Secrets and Lies (Schneier)|Secrets and Lies]]'' * [[Robert Wright (journalist)|Robert Wright]], ''The Moral Animal: Why We Are the Way We Are: The New Science of Evolutionary Psychology''. Vintage, 1995. {{ISBN|0-679-76399-6}}. {{refend}} == Further reading == * Robert, W.; Thompson, Nicholas S., eds., ''Deception. Perspectives on Human and Nonhuman Deceit''. New York: [[State University of New York Press]]. * Kopp, Carlo, [http://www.csse.monash.edu.au/~carlo/infowar-in-biology.html ''Deception in Biology: Nature's Exploitation of Information to Win Survival Contests'']. Monash University, October 2011. * [https://www.nbcnews.com/id/wbna6249749 "Scientists Pick Out Human Lie Detectors"], [[NBC News]]/[[Associated Press]] * Zhang Yingyu, ''The Book of Swindles: Selections from a Late Ming Collection'', translated by Christopher Rea and Bruce Rusk (New York: Columbia University Press, 2017). == External links == * {{Wiktionary inline}} * {{commons category-inline}} * {{wikiquote-inline}} {{Disinformation}} {{Conspiracy theories}} {{Nonverbal communication}} {{Authority control}} [[Category:Deception| ]] [[Category:Barriers to critical thinking]] [[Category:Communication]] [[Category:Human behavior]] [[Category:Psychology experiments]] [[Category:Lying]] </textarea><div class="templatesUsed"><div class="mw-templatesUsedExplanation"><p><span id="templatesused">Pages transcluded onto the current version of this page<span class="posteditwindowhelplinks"> (<a href="/wiki/Help:Transclusion" title="Help:Transclusion">help</a>)</span>:</span> </p></div><ul> 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