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Child-Maltreatment-Research-L (CMRL) List Serve

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Welcome to the database of past Child-Maltreatment-Research-L (CMRL) list serve messages (10,000+). The table below contains all past CMRL messages (text only, no attachments) from Nov. 20, 1996 - June 11, 2018 and is updated quarterly.

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Message ID: 8179
Date: 2009-06-04

Author:Eun Koh

Subject:RE: how to calculate an effect size

I recently looked into the issue of effect size, and hopefully, this site will help: http://web.uccs.edu/lbecker/Psy590/es.htm It is noted in the above site, but again many people refer to Cohen's article when discussing the size (small, medium, large) of effect size: Cohen (1988). Statistical power analysis for the behavior sciences (second ed.). Hope this helps. Eun Eun Koh Postdoctoral Research Associate Children and Family Research Center School of Social Work University of Illinois at Urbana-Champaign Tel) 312-641-2505 (ext.18) E-mail) eunkoh@illinois.edu ________________________________ From: bounce-3984573-9402306@list.cornell.edu [mailto:bounce-3984573-9402306@list.cornell.edu] On Behalf Of Todd McDonald Sent: Wednesday, June 03, 2009 2:01 PM To: Child Maltreatment Researchers Cc: jmpolstra@att.net Subject: how to calculate an effect size I notice some of the journal articles use very large samples. Is there a way to calculate an effect size from a crosstabs table and a logistic regression table? Is there a rule on what is considered a big effect? TM

I recently looked into the issue of effect size, and hopefully, this site will help: http://web.uccs.edu/lbecker/Psy590/es.htm It is noted in the above site, but again many people refer to Cohen's article when discussing the size (small, medium, large) of effect size: Cohen (1988). Statistical power analysis for the behavior sciences (second ed.). Hope this helps. Eun Eun Koh Postdoctoral Research Associate Children and Family Research Center School of Social Work University of Illinois at Urbana-Champaign Tel) 312-641-2505 (ext.18) E-mail) eunkohillinois.edu ________________________________ From: bounce-3984573-9402306list.cornell.edu [mailto:bounce-3984573-9402306list.cornell.edu] On Behalf Of Todd McDonald Sent: Wednesday, June 03, 2009 2:01 PM To: Child Maltreatment Researchers Cc: jmpolstraatt.net Subject: how to calculate an effect size I notice some of the journal articles use very large samples. Is there a way to calculate an effect size from a crosstabs table and a logistic regression table? Is there a rule on what is considered a big effect? TM