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Reference Manual on Scientific Evidence: Third Edition | The National Academies Press
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text-align: center; height: 100%; display: none; } .cover-block:hover .cover-zoom { display: block; cursor: pointer; } .cover-zoom p { padding-top: 3px; } .cover-it { margin: 0px auto 5px auto; ; display: flex; flex-direction: column; align-content: flex-start; } .cover-zoom .cover-button { margin: auto; color: white; background: rgba(58, 133, 179, 1); padding: 10px; border-radius: 4px; flex: 1; } .cover-button:hover { background: #052c44; } .cover-button > a { color: white; } .cover-button > a:hover { color: #fff; text-decoration: none; } .cover-zoom .glyphicon.glyphicon-zoom-in { font-size: 2rem; opacity: 1.0; display: block; } .cover-zoom .glyphicon.glyphicon-book { font-size: 2rem; opacity: 1.0; display: block; color: #efefef; } #myCover img { margin: auto auto; } #resourceblock { color: black; font-weight: 500; } #resourceblock ul { list-style: none; margin-left: 0px; padding-left: 0px; padding-top: 10px; } #resourceblock ul li { list-style: none; margin-left: 0px; padding: 0px 5px 5px 0px; 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align-content: space-between; align-items: stretch; justify-content: flex-start; flex-direction: column; position: relative; margin-bottom: 10px; flex: 1; } .flex-row.row2 { display: flex; align-content: space-between; align-items: stretch; justify-content: flex-start; flex-direction: row; position: relative; margin-bottom: 10px; flex: 1; } .resource-list li { text-indent: 0px; padding-left: 20px; display: block; border: 1px solid #ccc; padding: 10px; margin-right: 5px; border-radius: 5px; white-space: nowrap; margin-bottom: 10px; } } #resourceblock h4 { font-family: "lato", sans-serif; font-weight: bold; font-size: 14px; } #statusblock { position: absolute; top: -10px; left: 0px; } #actions { position: absolute; right: 0px; top: -10px; } .btn-tool { display: inline; padding: 5px; background: #fff; margin-right: 3px; } a.btn-tool { color: #336699; font-size: 12px; padding-left: 25px; position: relative; } a.btn-tool.email-this { color: #4148C2; font-size: 12px; padding-left: 0px; position: relative; } .link-tools { display: flex; } .tooltip-inner { max-width: 300px; padding: 2rem; text-align: left; background-color: #333; color: #fff; border-radius: 0rem; } .report-type { font-size: 14px; font-weight: 400; padding-left: 10px; } .report-type:before { font-family: 'icomoon'; speak: none; content: "\e65a"; margin-right: 5px; color: #bc9b6a; opacity: .6; } .lt-addmynap-on, .lt-embed { color: #336699; position: absolute; left: 5px; top: 5px; } .lt-addmynap-off { color: green; position: absolute; left: 5px; top: 5px; } .btn-clear { border: 1px solid #4148C2; border-radius: 4px; } .alert-info { color: #333; } .alert { padding: 15px; margin-bottom: 20px; background-color: #d9edf7; border-color: #a7d5de; border-radius: 4px; } .row-title.ft { padding-bottom: 10px; font-size: 1.25em; line-height: 1.25; border-bottom: 0px; } .book-tile h4 { font-family: "lato", helvetica, sans-serif; font-size: 14px; } .panel-body { padding: 20px 40px; border-top: none; } #stats { padding: 40px; background-image: linear-gradient(180deg, #f3f1eb 0, rgba(243,241,235,0) 250px); } .panel-default > .panel-heading { padding: 20px; background: #9ec0d5; } .panel-group .panel-heading + .panel-collapse .panel-body { border: none; } .panel-heading.cp-accordion-toggle.collapsed.in:after { content: "\2796"; } .cp-accordion { font-size: 20px; font-weight: 900; } h4.panel-title { font-family: 'lato'; font-weight: 700; font-size: 1.3em; line-height: 1; } .panel-heading .cp-accordion-toggle:after { content: "\2796"; /* Unicode character for "minus" sign (-) */ font-size: 13px; color: #777; float: right; margin-left: 5px; } .panel-heading .cp-accordion-toggle.collapsed:after { /* symbol for "collapsed" panels */ content: '\02795'; /* adjust as needed, taken from bootstrap.css */ } .cp-accordion-toggle.collapsed.in:after { content: "\2796"; } .chapter-name a { font-weight: 500; line-height: 1.5; } /*Responsive Video Embed*/ .videoWrapperOuter { max-width: 640px; margin-left: auto; margin-right: auto; margin-bottom: 20px; } .video.videoWrapperOuter h4 { font-size: 16px; font-family: 'lato', sans-serif; font-weight: 900; } .videoWrapperInner { float: none; clear: both; width: 100%; position: relative; padding-bottom: 50%; padding-top: 25px; height: 0; } .videoWrapperInner iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; } h4.videoTitle { font-size: 14px; font-family: 'lato', helvetica; color: #666; } .icon-skim { color: #4148C2; margin-right: 6px; } .graysearchouter { border: 1px solid #ccc; margin-bottom: 30px; background: #fff; height: 45px; } blockquote { text-align: left !important; } .citation-formats { display: inline-flex; align-content: stretch; align-items: flex-start; justify-content: flex-start; margin-left: 0px; padding-left: 0px; list-style: none; flex-wrap: wrap; } .citation-formats li { max-width: 100%; width: 168px; margin-bottom: 5px; margin-right: 5px; } .citation-formats li a { font-size: 12px; font-weight: 500; letter-spacing: 1px; display: block; border: 1px solid #4148C2; border-radius: 4px; padding: 8px; margin-right: 3px; word-wrap: nowrap; white-space: nowrap; width: 100%; } .citation-formats li a:hover { background: #4148C2; color: white; text-decoration: none; } .citation-formats li a:before { content: "\e75c"; font-family: 'icomoon'; speak: none; margin-right: 5px; color: #4148C2; opacity: .6; } h3.citation-subheading { border-bottom: 0px; color: #565555; font-size: 14px; } h3 { font-size: 14px; margin-bottom: 20px; font-weight: 700; color: #333; text-transform: uppercase; } .embargo-row { padding: 1rem; background: #eed9d9; text-align: center; } .mynap-promo { padding: 10px; margin-bottom: 20px; background: #efefef; border: 1px solid #ccc; border-radius: 4px; } .mynap-promo.visible-xs.visible-sm { padding: 10px; background: #fff; margin: 10px 0px; } @media screen and (max-width: 500px) { .flex-row.row2 { display: flex; align-content: space-between; align-items: stretch; justify-content: flex-start; flex-direction: row; position: relative; margin-bottom: 10px; flex: 1; flex-wrap: wrap; } .flex-row-cover { flex-direction: column; } #titleblock h1 { font-size: 18px; line-height: 22px; margin: 0px; word-wrap: break-word; max-width: 100%; } .btn { text-align: left; white-space: wrap !important; font-size: 16px; width: 100%; } .btn-buy-top { width: 100%; } } @media screen and (max-width: 768px) { .flex-item.rel-info { display: none; max-width: 100%; } .container { padding: 0px; } .panel-body { padding: 0px; } .flex-item.searchob, .flex-item.toclist { width: 97%; } } @media screen and (max-width: 980px) { .flex-item.rel-info { max-width: 100%; } } </style> <style>pre { background-color: transparent !important; }</style> </head> <body> <!-- Google Tag Manager (nos cript) --> <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-N9MJ23" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript> <!-- End Google Tag Manager (noscript) --> <a name="top" id="top"></a> <a href="#content" class="sr-only sr-only-focusable">Skip to main content</a> <style> body { overflow-x: hidden; } #lowerMenu { background: #fff } .global-nav--local .mega-menu { display: block; -webkit-transform: translateY(0em); transform: translateY(0em); } .global-nav--local.search-is-hidden .mega-menu { display: none; -webkit-transform: translateY(0em); transform: translateY(0em); } .global-nav .container:not(.mega-menu__header) { padding: 0rem; padding-top: 0rem; padding-right: 0rem; padding-top: 0.5rem; padding-right: 1rem; } .global-nav__controls { top: .3rem; padding-right: 20px; } .global-nav--local .global-nav__links { -webkit-transform: translateY(0); transform: translateY(0); max-width: 75%; float: right; background: #fff; } .global-nav__links ul { display: -webkit-flex; display: flex; -webkit-justify-content: flex-end; justify-content: flex-end; margin-top: .5rem; } .global-nav--local.menu-is-hidden .global-nav__links { opacity: 0; -webkit-transform: translateY(0.5em); transform: translateY(0.5em); visibility: hidden; } #header-large { max-width: 1180px; margin: 0; padding: 0 0; -webkit-box-shadow: none; -moz-box-shadow: none; box-shadow: none; flex-wrap: nowrap; position: absolute; top: 113px; text-align: right; width: 100%; right: 0; } #header-large .user-links { white-space: nowrap; display: inline-flex; margin: 0; padding: 0; background: #fff; z-index: 0; list-style: none; min-width:500px; } .user-links li { margin-right: 7%; } .user-links li a { font-size: 10px; text-align: left; text-transform: uppercase; color: #000; } #header-large a.site-links { margin-right: 15px; color: #000; padding-left: 0px; padding-right: 5px; font-size: 12px; text-transform: uppercase; } .site-links:hover { text-decoration: underline; } nav#sitelinks-wide { position: absolute; top: 16px; } #sitelinks-wide ul { display: flex; justify-content: space-between; margin: 0; padding: 0; } #sitelinks-wide ul li { #sitelinks-mobile { display: none; } white-space: nowrap; } #sitelinks-mobile { display: none; } .user-links li a:hover { text-decoration: underline; } .dropdown-menu { position: absolute; top: 100%; left: 10px; z-index: 9999999; display: none; float: left; min-width: 160px; padding: 5px 0; margin: 2px 0 0; list-style: none; font-size: 14px; background-color: #ffffff; border: 1px solid #cccccc; border: 1px solid rgba(0, 0, 0, 0.15); border-radius: 4px; -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175); box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175); background-clip: padding-box; } #dropdownMenuButton { border: 1px solid #ccc; font-size: 14px; font-weight: 700; } .dropdown #dropdownMenuButton:after { content: '\02795'; /* Unicode character for "plus" sign (+) */ font-size: 13px; color: #777; float: right; margin-left: 5px; } .dropdown.open #dropdownMenuButton:after { content: "\2796"; /* Unicode character for "minus" sign (-) */ } li.naphelp { display: block;} @media (max-width: 930px) { #header-large { right: 80px; } #header-large .user-links { min-width:100px; } nav#sitelinks-wide { display: none; } #sitelinks-mobile { display: block; position: absolute; top: -10px; left: 107px; } #sitelinks-wide ul { display: block; } #sitelinks-wide ul li { margin-right: 0%; white-space: nowrap; } .dropdown-item { display: block; width: 100%; padding: .25rem 1.5rem; clear: both; font-weight: 400; color: #212529; text-align: inherit; white-space: nowrap; background-color: transparent; border: 0; text-align: left; } .dropdown.nap-mega-menu.mega-dropdown { display: none;} li.naphelp { display: none;} } .global-nav__links { display: none; opacity: 1; transition: opacity .15s, -webkit-transform .15s; transition: opacity .15s, transform .15s; transition: opacity .15s, transform .15s, -webkit-transform .15s; } .global-nav--local .global-nav__links { -webkit-transform: translateY(0); transform: translateY(0); } .global-nav--local.menu-is-hidden .global-nav__links { opacity: 0; -webkit-transform: translateY(0.5em); transform: translateY(0.5em); } .global-nav__links ul { display: -webkit-flex; display: flex; -webkit-justify-content: flex-end; justify-content: flex-end; margin-top: 1rem; } .global-nav__links li:hover .global-nav__link>span::before, .global-nav__links li:focus-within .global-nav__link>span::before, .global-nav__links .global-nav__link.is-active>span::before, .global-nav__links .global-nav__link:hover>span::before, .global-nav__links .global-nav__link:focus>span::before { background-color: #1C143D; ; } .global-nav__links li:hover .global-nav__link>span::before::after, .global-nav__links li:focus-within .global-nav__link>span::before::after, .global-nav__links .global-nav__link.is-active>span::before::after, .global-nav__links .global-nav__link:hover>span::before::after, .global-nav__links .global-nav__link:focus>span::before::after { opacity: 1; } @media screen and (min-width: 65em) { .global-nav__links { display: block; } .global-nav__links>ul>li:last-of-type .global-nav__link { margin-right: -1.25em; } } .global-nav__link { position: relative; display: block; padding: .75em 1.5em .5em; color: rgb(34, 34, 34); color: var(--color-neutral--charcoal); border-bottom: 5px solid transparent; /*font-size: .885rem;*/ font-weight: 700; font-weight: var(--lato--bold); text-decoration: none; transition: color .15s; } .global-nav__link>span { position: relative; } .global-nav__link>span::before { content: ""; position: absolute; bottom: -.5em; left: 0; width: 100%; height: 5px; background-color: transparent; transition: background-color .15s; } .global-nav__dropdown { position: absolute; top: calc(100% + 1em); left: 50%; display: none; width: 600px; background-color: rgb(255, 255, 255); background-color: var(--color-neutral--white); box-shadow: 0 5px 15px rgba(34, 34, 34, .25); box-shadow: 0 5px 15px var(--box-shadow--charcoal); -webkit-transform: translateX(-50%); transform: translateX(-50%); z-index: 20; } .global-nav__dropdown::before { content: ""; position: absolute; top: -1em; left: 0; display: block; width: 100%; height: 1em; } .global-nav__dropdown .dropdown__left { position: relative; min-height: 260px; width: 40%; padding: 1.5rem; background: rgb(255,255,255); background: -moz-linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(73,69,104,1) 0%, rgba(0,0,0,1) 100%, rgba(195,228,228,1) 100%); background: -webkit-linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(73,69,104,1) 0%, rgba(0,0,0,1) 100%, rgba(195,228,228,1) 100%); background: linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(73,69,104,1) 0%, rgba(0,0,0,1) 100%, rgba(195,228,228,1) 100%); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr="#ffffff",endColorstr="#c3e4e4",GradientType=1); } .global-nav__dropdown .dropdown__left a { display: block; color: rgb(255, 255, 255); color: var(--color-neutral--white); font-weight: 400; font-weight: var(--lato--regular); transition: color .15s; font-size: 16px; } .global-nav__dropdown .dropdown__left a:hover, .global-nav__dropdown .dropdown__left a:focus, .global-nav__dropdown .dropdown__left a:active { color: rgb(246,210,0); color: var(--color-yellow--pure); } .global-nav__dropdown .dropdown__left ul { -webkit-flex-direction: column; flex-direction: column; } .global-nav__dropdown .dropdown__left li a { padding: .5em 0; line-height: 1.4; } .global-nav__dropdown .dropdown__left--default { position: absolute; top: 0; right: 0; bottom: 0; left: 0; overflow: hidden; background-color: rgb(243, 241, 235); background-color: var(--color-brown--bone); } .global-nav__dropdown .dropdown__left--default img { width: 100%; height: auto; /* stylelint-disable max-nesting-depth */ /* stylelint-enable max-nesting-depth */ } @supports (object-fit: cover) { .global-nav__dropdown .dropdown__left--default img { height: 100%; object-fit: cover; } } .global-nav__dropdown .dropdown__right { width: 60%; padding: 1.5rem; } .global-nav__dropdown .dropdown__right .button { margin-top: 2em; text-shadow: none; } .global-nav__dropdown .dropdown__right a { color: rgb(0, 89, 145); color: var(--color-blue--bahama); text-decoration: none; transition: color .15s; } .global-nav__dropdown .dropdown__right a:hover, .global-nav__dropdown .dropdown__right a:focus { color: rgb(33,23,71); color: var(--color-blue--imperial); text-decoration: underline; } .rm-dropdown:hover::after, .rm-dropdown:focus::after { visibility: hidden; } .has-dropdown { position: relative; } .has-dropdown::after { content: ""; position: absolute; top: calc(100% + 3px); left: 50%; width: 26px; height: 15px; background-image: url(data:image/png;base64,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); background-repeat: no-repeat; -webkit-transform: translateX(-50%); transform: translateX(-50%); visibility: hidden; } .has-dropdown:hover::after, .has-dropdown:focus::after { visibility: visible; } .has-dropdown:hover .global-nav__dropdown { display: -webkit-flex; display: flex; } .has-dropdown:focus-within .global-nav__dropdown { display: -webkit-flex; display: flex; } .has-dropdown:nth-last-of-type(-n+3) .global-nav__dropdown { left: auto; -webkit-transform: none; transform: none; } .has-dropdown:nth-last-of-type(3) .global-nav__dropdown { right: -200%; } .has-dropdown:nth-last-of-type(2) .global-nav__dropdown { right: -90%; } .has-dropdown:last-of-type .global-nav__dropdown { right: 5%; } .global-nav__links { z-index: 5; } header.global-nav { height: 150px; } .button.button--secondary.button--outline.button--icon { font-size: 12px; padding-right: 40px; } .button.button--icon svg { height: 2.5em; position: absolute; top: 50%; left: 60%; -webkit-transform: translate(-50%, -50%); transform: translate(-50%, -50%); width: 24px; } .controls__search, .controls__menu, .controls__nav { font-size: 12px; } .global-nav__menus--upper { display: -webkit-flex; display: flex; -webkit-justify-content: space-between; justify-content: space-between; margin-bottom: 2rem; } .global-nav__link { font-size: 16px; } .global-nav__links ul { display: -webkit-flex; display: flex; -webkit-justify-content: flex-end; justify-content: flex-end; margin-top: 5px; list-style: none; } .invert { background: #000; color: #fff; } .controls__nav .menu-off { display: inline; } .controls__nav .menu-on { display: none; } .controls__nav.invert .menu-off { display: none } .controls__nav.invert .menu-on { display: inline; } .mega-menu { background-color: rgb(243, 241, 235); background-color: var(--color-brown--bone); position: fixed; top: 0; right: 0; bottom: 0; left: 0; overflow: scroll; z-index: 9999999; } .mega-menu .mega-menu__header { display: -webkit-flex; display: flex; -webkit-justify-content: space-between; justify-content: space-between; -webkit-align-items: center; align-items: center; padding-top: 1rem; } .mega-menu__content .search-form__container { position: relative; max-width: 70em; margin: 0 auto; } #search .global-nav__logo { position: absolute; top: 1em; } .sf-top { margin-top: 50px; } #searchFormNAP { display: block; height: 100px; } a:hover, a:focus { color: #1C143D; text-decoration: underline; } #fixedfooter a:hover, #fixedfooter a:focus { color: #fff; text-decoration: underline; } .btn-blueflat.btn-searchhome.hide-xs { display: none; } .mega-menu__content { margin-top: 50px; margin-left: 7px; } .accordion__title.faq__accordion__title .flex.justify-between { display: inherit; } .global-nav__logo { margin: 0px !important; position: absolute; left: 15px; top: 25px; height: 55px; } .global-nav__link:hover { text-decoration: none; } @media screen and (min-width: 65em) { .mega-menu__content .search-form { padding: 1em 0px 3em 0em; } } @media (min-width: 45rem) { .global-nav__logo {} } @media (max-width: 480px) { .global-nav__logo { margin: 0px !important; position: absolute; left: 15px; top: 12px; } } /* Style the buttons that are used to open and close the accordion panel */ #mobile-menu button.accordion, #mobile-menu button.no-accordion { letter-spacing: 1px; text-align: left; color: #4148C2; font-size: 1.1em; font-weight: 700 !important; font-family: 'lato', helvetica, sans-serif; padding: 15px 0px 15px 0px; border-top: none !important; border-bottom: .5px solid rgb(221, 213, 199) !important; cursor: pointer; width: 100%; } .mega-menu__content .accordion { border: 0; font-weight: 700; } #mobile-menu .accordion:after { content: '\02795'; /* Unicode character for "plus" sign (+) */ font-size: 13px; color: #777; float: right; margin-left: 5px; } #mobile-menu button.active:after { content: "\2796"; /* Unicode character for "minus" sign (-) */ } /* Add a background color to the button if it is clicked on (add the .active class with JS), and when you move the mouse over it (hover) */ #mobile-menu button.active, #mobile-menu button.accordion:hover { background-color: transparent; } /* Style the accordion panel. Note: hidden by default */ #mobile-menu .panel { padding: 0 0; background-color: transparent; max-height: 0; box-shadow: 0 !important; overflow: hidden; transition: max-height 0.2s ease-out; margin: 0px !important; border: 0 !important; } #mobile-menu .panel ul li { margin: 0px 0px; padding-left: 0px; } #mobile-menu .panel ul { margin-top: 10px; margin-bottom: 10px; padding-left: 0px; } #mobile-menu .panel ul li { line-height: 2; } #mobile-menu .panel ul li a { color: #000; text-decoration: underline; cursor: pointer; } .controls__menu-mobile { text-transform: uppercase; } .controls__menu-mobile svg { fill: #222; fill: var(--color-neutral--charcoal); width: 1.75rem; height: 1.75rem; } .cart-badge { display: inline-block; text-align: center; line-height: 1; background: #7899F2; color: white; font-weight: bold; border-radius: 20px; padding: 3px 6px; margin-left: 3px; } @media screen and (min-width: 65em) { #mobile-menu .controls__menu { display: inline; } } @media screen and (max-width: 65em) { #mobile-menu .controls__menu svg { display: inline; } } /*NAP mega menu dropdown*/ li.nap-mega-menu.mega-dropdown { position: static !important; width:100% !important; } .nap-mega-menu .mega-dropdown-menu { padding: 20px 0px; box-shadow: none; -webkit-box-shadow: none; margin-top: 10px !important; box-shadow: 0 5px 15px var(--box-shadow--charcoal); transform: none !important; top: 100% !important; } .nap-mega-menu .mega-dropdown-menu > li > ul.browse-col { padding: 0; margin: 0; width: 100%; } .nap-mega-menu .mega-dropdown-menu > li > ul > li { list-style: none; } .nap-mega-menu .mega-dropdown-menu > li > ul > li > a { display: block; padding: 3px 20px; clear: both; font-weight: normal; line-height: 1.428571429; color: #4148C2; white-space: normal; font-size: 14px; text-transform: none; } .nap-mega-menu .mega-dropdown-menu > li ul > li > a:hover, .nap-mega-menu .mega-dropdown-menu > li ul > li > a:focus { text-decoration: none; color: #444; background-color: #f5f5f5; } .nap-mega-menu .mega-dropdown-menu .dropdown-header a { color: #4148C2; font-size: 14px; font-weight: 900 !important; text-align: left; text-transform: uppercase !important; padding: 0px; margin-bottom: 7px; } .nap-mega-menu .mega-dropdown-menu form { margin:3px 20px; } .nap-mega-menu .mega-dropdown-menu .form-group { margin-bottom: 3px; } .nap-mega-menu .vertical-divider { border-left: 1px solid #ccc; } .nap-mega-menu .mega-dropdown-menu > li.d-flex { display: inline-flex !important; margin-right: 0 !important; justify-content: space-between; flex-wrap: nowrap !important; flex-direction: row !important; } #nap-mega-menu-inner { justify-content: space-between; align-content:start; } #nap-mega-menu-inner li.browse-col { width: 22%; } </style> <header class="global-nav global-nav--local menu-is-hidden search-is-hidden" id="lowerMenu"> <div class="container flex justify-between"> <!--Mega menu start --> <div aria-hidden="true" class="mega-menu" id="search"> <div data-lock=""> <div 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[<a href="/content/using-mynap">Learn More</a>]</div> <div class="flex-row row"> <div class="row flex-row-actions"> <div class="results-author results-report-type"> <span data-placement="right" class="report-type" data-toggle="tooltip" data-container="body" title="Consensus Study Reports published by the National Academies of Sciences, Engineering, and Medicine document the evidence-based consensus on the study’s statement of task by an authoring committee of experts. Reports typically include findings, conclusions, and recommendations based on information gathered by the committee and the committee’s deliberations. 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[<a href="/content/using-mynap">Learn More</a>]</div> <h1>RESOURCES AT A GLANCE</h1> <ul class="resource-list"> <li class="htmldoc"><i class="las la-minus"></i><a href="http://www8.nationalacademies.org/onpinews/newsitem.aspx?RecordID=13163">Press Release</a></li> </ul> <div class="clearfix"></div> <ul class="external-links-list"> <li><a class="link-title" href="https://nap.nationalacademies.org/resource/13163/Introduzione%20for%20Reference%20Manual%20on%20Scientific%20Evidence.pdf">Introduzione</a></li> </ul> <div id="podcasts"> <h3><span class="icon-heading" data-icon=""></span>Audio/Podcast</h3> <div class="podcast"> <div class="podcast-title"><em><a href="#multimedia" class="reslink" style="text-decoration: underline;"></em> </a> </div> <!--<audio controls> <source src="https://www.nap.edu/resource/13163/20110928.mp3" type="audio/mpeg"> Your browser does not support the audio element. Please <a href="https://www.nap.edu/resource/13163/20110928.mp3">click here</a> to listen. </audio> --> </div> </div> <div class="clearfix"></div> <div class="clearfix"></div> </div> <!-- /resources --> </div> <!-- /row 2 --> </div> <!--/ container --> </div> </div> <div class="clearfix"></div> </div> <div class="middle-rows"> <div class="container" > <button class="cp-accordion">Additional Book Information</button> <div class="panel" style="max-height: 100%"> <div class="overview"> <div class="flex-row"> <div class="flex-item overview"> <h3>Topics</h3> <ul class="book-topics"> <li><a href="/topic/423"><span class="icon-423"></span><span itemprop="about">Policy for Science and Technology</span> </a></li> <li><a href="/topic/315"><span class="icon-315"></span> Biology and Life Sciences — Genetics </a></li> <li><a href="/topic/306"><span class="icon-306"></span> Behavioral and Social Sciences — Law and Justice </a></li> </ul> </div> <div class="flex-item overview"> <h3>Suggested Citation</h3> <div class="citation-string"> <blockquote> National Research Council. 2011. <em>Reference Manual on Scientific Evidence: Third Edition</em>. Washington, DC: The National Academies Press. https://doi.org/10.17226/13163.</div> <h4 class="citation-subheading">Import this citation to:</h4> <ul class="citation-formats"> <li><a href="/citation.php?type=bibtex&record_id=13163">Bibtex</a></li> <li><a href="/citation.php?type=enw&record_id=13163">EndNote</a></li> <li><a href="/citation.php?type=ris&record_id=13163">Reference Manager</a></li> </ul> </blockquote> </div> <div class="flex-item overview"> <h3>Publication Info</h3> <span itemprop="numberOfPages"> 1034</span> pages | 6 x 9 | <br> <br> ISBNs: <br> <ul> <li>Paperback: <span itemprop="isbn"> 978-0-309-21421-6</span></li> <li>Ebook: <span itemprop="isbn"> 978-0-309-21425-4</span></li> </ul> DOI: <a href="https://doi.org/10.17226/13163">https://doi.org/10.17226/13163</a><br> </div> </div> </div> </div> <button class="cp-accordion">Contents</button> <div class="panel" style="max-height: 100%"> <div id="toc"> <div class="flex-row toc" style="align-items: flex-start;"> <div class="flex-item toclist"> <table class="table"> <thead> <tr> <th>Chapters</th> <td></td> <th class="key-chapskim" >skim</th> </tr> </thead> <tbody> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/1">Front Matter</a></td> <td class="chapter-page-range">i-xviii</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=i-xviii" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/2">Introduction--Stephen Breyer</a></td> <td class="chapter-page-range">1-10</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=1-10" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/3">The Admissibility of Expert Testimony--Margaret A. Berger</a></td> <td class="chapter-page-range">11-36</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=11-36" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/4">How Science Works--David Goodstein</a></td> <td class="chapter-page-range">37-54</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=37-54" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/5">Reference Guide on Forensic Identification Expertise--Paul C. Giannelli, Edward J. Imwinkelried, and Joseph L. Peterson</a></td> <td class="chapter-page-range">55-128</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=55-128" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/6">Reference Guide on DNA Identification Evidence--David H. Kaye and George Sensabaugh</a></td> <td class="chapter-page-range">129-210</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=129-210" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/7">Reference Guide on Statistics--David H. Kaye and David A. Freedman</a></td> <td class="chapter-page-range">211-302</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=211-302" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/8">Reference Guide on Multiple Regression--Daniel L. Rubinfeld</a></td> <td class="chapter-page-range">303-358</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=303-358" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/9">Reference Guide on Survey Research--Shari Seidman Diamond</a></td> <td class="chapter-page-range">359-424</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=359-424" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/10">Reference Guide on Estimation of Economic Damages--Mark A. Allen, Robert E. Hall, and Victoria A. Lazear</a></td> <td class="chapter-page-range">425-502</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=425-502" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/11">Reference Guide on Exposure Science--Joseph V. Rodricks</a></td> <td class="chapter-page-range">503-548</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=503-548" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/12">Reference Guide on Epidemiology--Michael D. Green, D. Michal Freedman, and Leon Gordis</a></td> <td class="chapter-page-range">549-632</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=549-632" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/13">Reference Guide on Toxicology--Bernard D. Goldstein and Mary Sue Henifin</a></td> <td class="chapter-page-range">633-686</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=633-686" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/14">Reference Guide on Medical Testimony--John B. Wong, Lawrence O. Gostin, and Oscar A. Cabrera</a></td> <td class="chapter-page-range">687-746</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=687-746" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/15">Reference Guide on Neuroscience--Henry T. Greely and Anthony D. Wagner</a></td> <td class="chapter-page-range">747-812</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=747-812" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/16">Reference Guide on Mental Health Evidence--Paul S. Appelbaum</a></td> <td class="chapter-page-range">813-896</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=813-896" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/17">Reference Guide on Engineering--Channing R. Robertson, John E. Moalli, and David L. Black</a></td> <td class="chapter-page-range">897-960</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=897-960" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/18">Appendix A: Biographical Information of Committee and Staff</a></td> <td class="chapter-page-range">961-968</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=961-968" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> <tr> <td class="chapter-name"><a href="https://nap.nationalacademies.org/read/13163/chapter/19">Index</a></td> <td class="chapter-page-range">969-1016</td> <td class="chapter-skim"><a href="/skim.php?record_id=13163&chap=969-1016" class="btn btn-sm btn-skim" title="skim this chapter"><span class="glyphicon glyphicon-eye-open icon-skim"></span></a></td> </tr> </tbody> </table> </div> <div class="flex-item "> <div class="searchob"></div> <div class="searchobfaq"> <h3><span class="glyphicon glyphicon-eye-open icon-skim"></span>What is skim?</h3> <p>The Chapter Skim search tool presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter. 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