PROCEDURES BASED ON CLASSICAL APPROACHES FOR FIXED--EFFECTS LINEAR MODELS WITH NORMAL HOMOSCEDASTIC INDEPENDENT ERRORS. Some Theory of Multiple Comparisons Procedure Fixed--effects Linear Models. Single--step Procedures for Pairwise and More General Comparisons Among All Treatments. Stepwise Procedures for Pairwise and More General Comparisons Among All Treatments. Procedures for Some Other Nonhierarchical Finite Families of Comparisons. Designing Experiments for Multiple Comparisons. PROCEDURES FOR OTHER MODELS AND PROBLEMS, AND PROCEDURES BASED ON ALTERNATIVE APPROACHES. Procedures for One--way Layouts with Unequal Variances. Procedures for Some Mixed--effects Models. Distribution--free and Robust Procedures. Some Miscellaneous Multiple Comparison Problems. Optimal Procedures Using Decision--theoretic, Bayesian, and Other Approaches. Appendixes. Tables. References. Index.