{"id":258,"date":"2020-02-13T15:00:52","date_gmt":"2020-02-13T20:00:52","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/?post_type=chapter&#038;p=258"},"modified":"2024-08-19T11:26:01","modified_gmt":"2024-08-19T15:26:01","slug":"6-3-quasi-experiments","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/chapter\/6-3-quasi-experiments\/","title":{"raw":"6.3 Quasi-Experiments","rendered":"6.3 Quasi-Experiments"},"content":{"raw":"Under certain conditions, researchers often turn to field experiments, also known as quasi-experiment. These conditions usually occur when it is not possible to randomly assign participants to treatment and control groups (White &amp; Sabarwal, 2014). Rather, selection to a group is by the participants, the researcher, or both the participant and the researcher (White &amp; Sabarwal, 2014).\r\n\r\nIn a quasi-experiment, the independent variable is manipulated and similar to an experiment, it tests causal hypothesis (Campbell &amp; Stanley, 1963).\r\n\r\nQuasi-experiments allow researchers to infer causality by using the logic behind the experiment in a different way; however, there are three criteria that must be satisfied for causality to be inferred:\r\n<ol>\r\n \t<li>The independent variable (X) comes before the dependent variable (Y) in time.<\/li>\r\n \t<li>X and Y are related to each other (i.e., they occur together).<\/li>\r\n \t<li>The relationship between X and Y aren\u2019t explained by other causal agents (Crump, Price, Jhangiani, Chiang, &amp; Leighton, 2017).<\/li>\r\n<\/ol>\r\nIn a quasi-experiment the researcher identifies a comparison group that is as similar as is possible to the treatment group, as it relates to baseline (pre-intervention) characteristics. There are techniques for reducing selection bias when creating a comparison group. These techniques are <a href=\"https:\/\/www.betterevaluation.org\/sites\/default\/files\/Quasi-Experimental_Design_and_Methods_ENG.pdf\">regression discontinuity design and propensity score matching<\/a> (White &amp; Sabarwal, 2014).","rendered":"<p>Under certain conditions, researchers often turn to field experiments, also known as quasi-experiment. These conditions usually occur when it is not possible to randomly assign participants to treatment and control groups (White &amp; Sabarwal, 2014). Rather, selection to a group is by the participants, the researcher, or both the participant and the researcher (White &amp; Sabarwal, 2014).<\/p>\n<p>In a quasi-experiment, the independent variable is manipulated and similar to an experiment, it tests causal hypothesis (Campbell &amp; Stanley, 1963).<\/p>\n<p>Quasi-experiments allow researchers to infer causality by using the logic behind the experiment in a different way; however, there are three criteria that must be satisfied for causality to be inferred:<\/p>\n<ol>\n<li>The independent variable (X) comes before the dependent variable (Y) in time.<\/li>\n<li>X and Y are related to each other (i.e., they occur together).<\/li>\n<li>The relationship between X and Y aren\u2019t explained by other causal agents (Crump, Price, Jhangiani, Chiang, &amp; Leighton, 2017).<\/li>\n<\/ol>\n<p>In a quasi-experiment the researcher identifies a comparison group that is as similar as is possible to the treatment group, as it relates to baseline (pre-intervention) characteristics. There are techniques for reducing selection bias when creating a comparison group. These techniques are <a href=\"https:\/\/www.betterevaluation.org\/sites\/default\/files\/Quasi-Experimental_Design_and_Methods_ENG.pdf\">regression discontinuity design and propensity score matching<\/a> (White &amp; Sabarwal, 2014).<\/p>\n","protected":false},"author":31,"menu_order":7,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-258","chapter","type-chapter","status-publish","hentry"],"part":195,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/pressbooks\/v2\/chapters\/258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/wp\/v2\/users\/31"}],"version-history":[{"count":4,"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/pressbooks\/v2\/chapters\/258\/revisions"}],"predecessor-version":[{"id":1208,"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/pressbooks\/v2\/chapters\/258\/revisions\/1208"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/pressbooks\/v2\/parts\/195"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/pressbooks\/v2\/chapters\/258\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/wp\/v2\/media?parent=258"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/pressbooks\/v2\/chapter-type?post=258"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/wp\/v2\/contributor?post=258"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/jibcresearchmethods\/wp-json\/wp\/v2\/license?post=258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}