ideomotor effect - The Skeptic's Dictionary

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style="text-align: left"><font face="Arial" size="3">The ideomotor effect refers to the influence of suggestion or expectation on involuntary and unconscious motor behavior. The movement of pointers on <a href="ouija.html"> Ouija boards</a>, of a facilitator's hands in <a href="facilcom.html">facilitated communication</a>, of hands and arms in <a href="akinesiology.html">applied kinesiology</a>, and of some behaviors attributed to <a href="hypnosis.html">hypnotic suggestion</a>, are due to ideomotor action.</font></p> <p style="text-align: left"><font face="Arial" size="3">Ray Hyman (1999) has demonstrated the seductive influence of ideomotor action on medical quackery, where it has produced such appliances as the "<a href="http://www.quackwatch.org/01QuackeryRelatedTopics/Tests/toftness.html">Toftness Radiation Detector</a>" (used by <a href="chiro.html">chiropractors</a>) and "black boxes" used in medical <a href="http://www.homeoint.org/morrell/british/radionic.htm">radiesthesia</a> and <a href="radionics.html">radionics</a> (popular with <a href="natpathy.html"> naturopaths</a> to harness "<a href="energy.html">energy</a>" used in diagnosis and healing.) Hyman also argues that such things as <a href="chikung.html"> Qi Gong</a> and "pulse diagnosis," popular in both Traditional Chinese Medicine and <a href="ayurvedic.html">Ayurvedic medicine</a> as practiced by <a href="chopra.html">Deepak Chopra</a>, are best explained in terms of ideomotor action and require no supposition of mysterious energies such as <a href="chi.html"> chi</a>.</font></p> <p style="text-align: left"><font face="Arial" size="3">The term "ideomotor action" was coined by William B. Carpenter in 1852 in his explanation for the movements of rods and pendulums by <a href="dowsing.html">dowsers</a>, and some table turning or lifting by <a href="medium.html">spirit mediums</a> (the ones that weren't accomplished by cheating). Carpenter argued that muscular movement can be initiated by the mind independently of volition or emotions. We may not be aware of it, but suggestions can be made to the mind by others or by observations. Those suggestions can influence the mind and affect motor behavior.</font></p> <p style="text-align: left"><font face="Arial" size="3">Scientific tests by American psychologist <a href="http://skepdic.com/refuge/blum.html">William James</a>, French chemist <a href="http://en.wikipedia.org/wiki/Michel_Eugene_Chevreul">Michel Chevreul</a>, English scientist <a href="http://en.wikipedia.org/wiki/Michael_Faraday">Michael Faraday</a> (Zusne and Jones 1989: 111), and American psychologist <a href="http://www.quackwatch.org/01QuackeryRelatedTopics/ideomotor.html">Ray Hyman</a> have demonstrated that many phenomena attributed to spiritual or paranormal forces, or to mysterious "<a href="energy.html">energies</a>," are actually due to ideomotor action. Furthermore, these tests demonstrate that "honest, intelligent people can unconsciously engage in muscular activity that is consistent with their expectations" (Hyman 1999). They also show suggestions that guide behavior can be given by subtle cues (Hyman 1977).</font></p> <p style="text-align: left"><font face="Arial" size="3"><b>See also </b> <a href="cleverhans.html">clever Hans phenomenon</a>,<b> </b> <a href="cleverlinda.html">clever Linda phenomenon</a>, <a href="emeter.html">e-meter</a>, <a href="polygrap.html">polygraph</a>, and <a href="spiritul.html">spiritism</a>.</font> <p style="text-align: left"><font face="Arial" size="3"><b>further reading</b></font></p> <p style="text-align: left"> <b><font face="Arial" size="3">books and articles</font></b><p style="text-align: left"><font face="Arial" size="3">Carpenter, William B. "On the influence of suggestion in modifying and directing muscular movement, independently of volition." <i> Proceedings of the Royal Institution of Great Britain</i>. 1852;1:147-153.</font><p style="text-align: left"> <font face="Arial" size="3"> <a href="http://www.quackwatch.org/01QuackeryRelatedTopics/ideomotor.html">Hyman, Ray. "How People Are Fooled by Ideomotor Action"</a></font><p style="text-align: left"> <font face="Arial" size="3"> <a href="http://www.amazon.com/exec/obidos/ISBN=1573928038/roberttoddcarrolA/"> Sampson, Wallace and Lewis Vaughn, editors. <i>Science Meets Alternative Medicine: What the Evidence Says About Unconventional Treatments </i> (Prometheus Books, 2000).</a> Chapter 6 is "The Mischief-Making of Ideomotor Action," by Ray Hyman.</font><p style="text-align: left"> <font face="Arial" size="3"> <a href="http://www.amazon.com/exec/obidos/ISBN=0805805087/roberttoddcarrolA/"> Zusne,  Leonard and Warren Jones. 2nd ed. <i>Anomalistic Psychology: A Study of Magical Thinking </i>2nd edition. (Lawrence Erlbaum Assoc. 1989).</a></font><p style="text-align: left"> <b><font face="Arial" size="3">websites</font></b><p style="text-align: left"><font face="Arial" size="3"><a href="http://www.barrettdorko.com/articles/ideomotor.htm">Without Volition - The Presence and Purpose of Ideomotor Movement</a> by Barrett L. Dorko, P. T. </font> </div> <p></webContent>Last updated 12-Sep-2014 </p> <div class="it"> <p> </div> </div> <div class="right"> <div class="right_it"> <div class="search"> <form method="get" action="http://www.google.com/custom" target="_top"> <input type="hidden" name="domains" value="skepdic.com" /> <input type="text" name="q" maxlength="255" value="" size="20" /> <input type="submit" name="sa" value="Search" /> <br /> <div class="search_2"> <input type="radio" name="sitesearch" value="" /> Web     <input type="radio" name="sitesearch" value="skepdic.com" checked="checked" /> Skepdic.com <br /> <img src="_images/logo_google.gif" alt="Google" width="48" height="19" /> </div> <input type="hidden" name="client" value="pub-3542920166946725" /> <input type="hidden" name="forid" value="1" /> <input type="hidden" name="ie" value="ISO-8859-1" /> <input type="hidden" name="oe" value="ISO-8859-1" /> <input type="hidden" name="cof" value="GALT:#008000;GL:1;DIV:#336699;VLC:663399;AH:center;BGC:FFFFFF;LBGC:336699;ALC:0000FF;LC:0000FF;T:000000;GFNT:0000FF;GIMP:0000FF;FORID:1;" /> <input type="hidden" name="hl" value="en" /> </form> </div> <p align="right"><a href="http://skepdic.com/authorpage.html"><strong>Books by R. 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