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 10-04-2010, 10:57 PM #1 Senior Member     Join Date: Oct 2009 Posts: 195 Cohen's d in SPSS SDN Members don't see this ad. (About Ads) Anyone know how to compute it? I haven't used SPSS since freshman year of undergrad and now they're making me (literally forcing me) to use it again. I'm trying to compute Cohen's d, the last thing I need for this assignment. I'm going to bed for the night, and expect some guidance when I wake up SDN! Thanks in advance, neuropsyance
 10-05-2010, 05:04 AM #2 1K Member   Status: Psychology Student Join Date: Mar 2007 Posts: 1,828 SPSS doesn't give it to you. The formula is simple and is obtainable from any google search for "cohen's d." There are half a dozen online calculators for it.
 10-05-2010, 09:51 AM #3 Senior Member     Join Date: Oct 2009 Posts: 195 Our instructor's assignment said to "use" SPSS to compute Cohen's d. I knew the calculation, but couldn't find it in SPSS (for now obvious reasons). She must have just made a typo haha.
10-05-2010, 10:22 PM   #5
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+1 on G Power.

It is amazing.

 01-08-2012, 03:18 AM #6 New Member   Join Date: Jan 2012 Posts: 1 just use the formula? Hi, perhaps your tutor wanted you to just use a formula to compute cohens d from some other information you have - do you have r or z for example, because if you do then d=(2r)/sqrt(1-r^2) and d=(2z)/sqrt(N-z)...spss doesn't necessarily have to have an option to calculate d for you....you can just use the transform function.
01-08-2012, 06:12 AM   #7
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Quote:
 Originally Posted by neuropsyance Our instructor's assignment said to "use" SPSS to compute Cohen's d. I knew the calculation, but couldn't find it in SPSS (for now obvious reasons). She must have just made a typo haha.
You use the SPSS output to calculate it, but spss does not provide d. Use an online calculator.

01-08-2012, 08:08 AM   #8
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Quote:
 Originally Posted by gladysCHugh ...spss doesn't necessarily have to have an option to calculate d for you....you can just use the transform function.
This. Use the syntax editor to compute it yourself.

01-08-2012, 09:40 AM   #9
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Quote:
 Originally Posted by neuropsyance Anyone know how to compute it? I haven't used SPSS since freshman year of undergrad and now they're making me (literally forcing me) to use it again. I'm trying to compute Cohen's d, the last thing I need for this assignment. I'm going to bed for the night, and expect some guidance when I wake up SDN! Thanks in advance, neuropsyance
try this
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