https://learnlab.org/mediawiki-1.44.2/index.php?action=history&feed=atom&title=Ecological_control_group 2026-04-30T23:44:15Z Revision history for this page on the wiki MediaWiki 1.44.2 https://learnlab.org/mediawiki-1.44.2/index.php?title=Ecological_control_group&diff=4739&oldid=prev 2007-04-10T21:32:05Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:32, 10 April 2007</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">Control </del>group that <del style="font-weight: bold; text-decoration: none;">recieves </del>the <del style="font-weight: bold; text-decoration: none;">typical instructional experience</del>, as is. <del style="font-weight: bold; text-decoration: none;">For example</del>, in an <del style="font-weight: bold; text-decoration: none;">Algebra Learnlab course</del>, <del style="font-weight: bold; text-decoration: none;">the </del>ecological control <del style="font-weight: bold; text-decoration: none;">group works through </del>the <del style="font-weight: bold; text-decoration: none;">unchanged tutor unit</del>, <del style="font-weight: bold; text-decoration: none;">exactly </del>the <del style="font-weight: bold; text-decoration: none;">same </del>as they <del style="font-weight: bold; text-decoration: none;">would if they were not participating </del>in a <del style="font-weight: bold; text-decoration: none;">study</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">An ecological control </ins>group <ins style="font-weight: bold; text-decoration: none;">is a control group in an [[in vivo experiment]] </ins>that <ins style="font-weight: bold; text-decoration: none;">is </ins>the <ins style="font-weight: bold; text-decoration: none;">"as is" approach within the current course.  The researcher is not free to choose the nature of the instruction in an ecological control</ins>, <ins style="font-weight: bold; text-decoration: none;">rather the instruction is determined by current practices in the course.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Having an ecological control group is one protection against choosing a control condition that might be judged </ins>as <ins style="font-weight: bold; text-decoration: none;">a "straw man" because it </ins>is <ins style="font-weight: bold; text-decoration: none;">too easy to improve upon and is not representative of standard practice</ins>.  </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">In laboratory studies, a researcher is free to choose a control group, for instance</ins>, <ins style="font-weight: bold; text-decoration: none;">to be as close to the treatment condition as possible </ins>in <ins style="font-weight: bold; text-decoration: none;">all aspects but a single variable being changed.  Such "tight controls" may sometimes be worse than current practice (i.e., the ecological control) and sometimes better.  </ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">In designing </ins>an <ins style="font-weight: bold; text-decoration: none;">in vivo experiment where current practice does not provide a tight control to test the target hypothesis</ins>, <ins style="font-weight: bold; text-decoration: none;">it is worthwhile to consider including both an </ins>ecological control <ins style="font-weight: bold; text-decoration: none;">as well as one or more tight control conditions.  For instance, in </ins>the <ins style="font-weight: bold; text-decoration: none;">[[Rummel_Scripted_Collaborative_Problem_Solving|Rummel et al. study of scripting collaboration]]</ins>, the <ins style="font-weight: bold; text-decoration: none;">ecological control is a students working individually with the Algebra Cognitive Tutor </ins>as they <ins style="font-weight: bold; text-decoration: none;">usually do, the tight control is students working collaboratively in pairs ''without'' a collaboration script, and the treatment is students working collaboratively </ins>in <ins style="font-weight: bold; text-decoration: none;">pairs ''with'' </ins>a <ins style="font-weight: bold; text-decoration: none;">collaboration script</ins>.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Glossary]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Glossary]]</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Research Standards]]</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:PSLC General]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:PSLC General]]</div></td></tr> </table>

Koedinger https://learnlab.org/mediawiki-1.44.2/index.php?title=Ecological_control_group&diff=3977&oldid=prev 2007-03-28T04:22:46Z

<p></p> <p><b>New page</b></p><div>Control group that recieves the typical instructional experience, as is. For example, in an Algebra Learnlab course, the ecological control group works through the unchanged tutor unit, exactly the same as they would if they were not participating in a study.<br /> <br /> <br /> [[Category:Glossary]]<br /> [[Category:PSLC General]]</div>

Julie-Booth