# Correcting for multiple comparisons in a within subjects / repeated measures ANOVA; excessively conservative?

It strikes me that the available corrections for multiple comparisons in the context of a repeated measures ANOVA are excessively conservative. Is this actually the case? If so, what are some citations I can use to support this point and learn more?

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What kind of MP correction are you referring too? (BTW, why the alpha tag?) –  chl Jul 16 '11 at 20:51
re the alpha tag: Only because the corrections typically are meant to hold alpha constant. –  rpierce Jul 16 '11 at 23:04
I'm not sure what MP stands for in this context, but I'm talking about the frequently used Bonferroni and/or Sidak multiple comparisons corrections. –  rpierce Jul 16 '11 at 23:05
I know there are other approaches, e.g. False Discovery Rate and so forth, but I am specifically looking to evaluate and critique the more frequently used approaches. –  rpierce Jul 16 '11 at 23:07
Sorry, a typo of mine: By "MP correction", I meant MCP (multiple comparisons procedure). I had in mind Tukey HSD (which acts on the test statistic, not the p-value), but your question is interesting (my +1) because it call for a critical appraisal of recent literature on that problem. –  chl Jul 17 '11 at 11:06