On 18 Oct 2000, Karl L. Wuensch wrote:
> I suggest that we not use the phrase "LSD" to describe the "protected t
> test," or "Fisher's procedure" (the procedure that requires having first
> obtained a significant omnibus ANOVA effect). After all, one can compute a
> "least significant difference" (between means to be "significant" at an
> adjusted criterion of significance) for any of the paranoid alpha-adjustment
> procedures: Fisher's, Bonferroni, Tukey a or b, Newman-Keuls, REGWQ, etc.
You are absolutely right, Karl. But we can't revise all of the textbooks
that are already out there. When our students pull books off the shelf in
the library, they are going to find references to the "LSD" method of
multiple comparisons. And MOST of the time, this will be referring to
Fisher's protected t. The Kleinbaum et al book is the first I've seen
where it does not.
Cheers,
Bruce
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