Date:         Mon, 11 May 1998 10:32:49 +1100
Reply-To:     John Reece <reece@RMIT.EDU.AU>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@UGA.CC.UGA.EDU>
From:         John Reece <reece@RMIT.EDU.AU>
Subject:      Re. Post-hoc analyses
Content-Type: text/plain; charset="us-ascii"

>I've just recently begun using SPSS V.6.1.4 Advanced (Windows) and I'm
>interested in doing post-hoc analyses of repeated measure ANOVAs.  From
>what I can tell though,  this program will only let me do a post-hoc of a
>one-way ANOVA. It seems odd that it'd be limited to that test only.  Am I
>misunderstanding something?  Is there a way to run a Tukey or Scheffe
>based on a repeated measures?
 
There is a macro for use with SPSS 6.1.x for carrying out post-hocs on
repeated measures, but it's not necessary. Just carry out a series of
paired-samples t-tests on the variables that were involved in the initial
analysis, making sure that you evaluate each comparison against an
alpha-level adjusted using a Bonferonni-type procedure. Note that if you
are going to do this, there is no compelling reason to carry out the
overall ANOVA in the first instance.
 
+----------------------------------------------------------------+
|John Reece, PhD                                                 |
|Dept. of Psychology & Intellectual Disability Studies           |
|RMIT University                        Phone:   +61.3.9925.7512 |
|PO Box 71                              Fax:     +61.3.9925.7303 |
|Bundoora VIC 3083                      mailto:reece@rmit.edu.au |
|AUSTRALIA       http://www.rmit.edu.au/departments/ps/reece.htm |
+----------------------------------------------------------------+