This article extends Scheffé's modified (sequential) multiple-comparison procedure in one-way analysisof-variance to other analysis situations, including interaction comparisons in factorial ANOVA designs, tests of partial regression coefficients in multiple-regression analysis, and comparisons of means in onefactor multivariate analyses of variance. Researchers who are concerned with maintaining familywise Type I error rates while increasing statistical power relative to the original

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... ous) Scheffé-based procedures are encouraged to consider these improved multiple-comparison methods.