{"id":408,"date":"2020-03-06T14:08:53","date_gmt":"2020-03-06T19:08:53","guid":{"rendered":"http:\/\/stroke.devel\/en\/glossary\/ceiling-effect\/"},"modified":"2020-09-03T16:06:21","modified_gmt":"2020-09-03T20:06:21","slug":"ceiling-effect","status":"publish","type":"glossary","link":"https:\/\/strokengine.ca\/fr\/glossary\/ceiling-effect\/","title":{"rendered":"Ceiling effect"},"content":{"rendered":"<p>A ceiling effect occurs when test items aren&rsquo;t challenging enough for a group of individuals. Thus, the test score will not increase for a subsample of people who may have clinically improved because they have already reached the highest score that can be achieved on that test. In other words, because the test has a limited number of difficult items, the most highly functioning individuals will score at the highest possible score. This becomes a measurement problem when you are trying to identify changes &#8211; the person may continue to improve but the test does not capture that improvement.<\/p>\n<p><em>Example: A memory test that assesses how many words a participant can recall has a total of five words that each participant is asked to remember. Because most individuals can remember all five words, this measure has a ceiling effect.<\/em>  See also \u00ab\u00a0floor effect.\u00a0\u00bb<\/p>","protected":false},"excerpt":{"rendered":"<p>A ceiling effect occurs when test items aren&rsquo;t challenging enough for a group of individuals. Thus, the test score will not increase for a subsample of people who may have clinically improved because they have already reached the highest score that can be achieved on that test. In other words, because the test has a [&hellip;]<\/p>","protected":false},"author":5,"featured_media":0,"parent":0,"template":"","glossary-cat":[],"class_list":["post-408","glossary","type-glossary","status-publish","hentry"],"acf":[],"related_terms":"","external_url":"","internal_reference_id":"","_links":{"self":[{"href":"https:\/\/strokengine.ca\/fr\/wp-json\/wp\/v2\/glossary\/408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/strokengine.ca\/fr\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/strokengine.ca\/fr\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/strokengine.ca\/fr\/wp-json\/wp\/v2\/users\/5"}],"version-history":[{"count":2,"href":"https:\/\/strokengine.ca\/fr\/wp-json\/wp\/v2\/glossary\/408\/revisions"}],"predecessor-version":[{"id":5193,"href":"https:\/\/strokengine.ca\/fr\/wp-json\/wp\/v2\/glossary\/408\/revisions\/5193"}],"wp:attachment":[{"href":"https:\/\/strokengine.ca\/fr\/wp-json\/wp\/v2\/media?parent=408"}],"wp:term":[{"taxonomy":"glossary-cat","embeddable":true,"href":"https:\/\/strokengine.ca\/fr\/wp-json\/wp\/v2\/glossary-cat?post=408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}