Assignment of subjects to treatment groups on the basis of a covariate is discussed. It is contended that in making such assignments, consideration should be focused on the conditional expectations of the dependent variable given in the covariate in both treatment and control groups. Statistical development and an example are presented. (JKS)

Describes how certain tendencies in reasoning, namely the failure to consider negative instances disconfirming evidence for one's hypotheses, may interfere with accurate personal and social judgments. Presents suggestions for clinical interventions that would help clients negate the destructive hypothesis they may have about themselves or others.…

A test for multisample sphericity based on the efficient scores criterion is obtained as an alternative to the likelihood ratio test developed by Mendoza. (Author)

A binomial test for hierarchical dependency is presented. The null hypothesis is that all members of a population who possess a certain skill are a subset of the members who possess another skill. The model, assumptions, formula derivations, and procedures for the test are explained. An illustrative hypothesis is provided. (Author/LMO)

Two statistics for use in the Shine-Bower single-subject analysis of variance designs are compared. Advantages and precautions concerning an alternate statistic to the mean square successive difference test for testing the slow change assumptions of the Shine-Bower error term are presented. (JKS)

A formula for the ratio of the variance of the pooled transformed data under departure from the binomial assumption to the variance of the pooled transformed data when the binomial assumption holds is given. (Authors)

The author is extemely critical of long-held concepts concerning poor children. (CK)