A single conceptual and theoretical framework for sampling any configuration of data from one or more population matrices is presented, integrating past designs and discussing implications for more general designs. The theory is based upon a generalization of the generalized symmetric mean approach for single matrix samples. (Author/CTM)

Using the notion of parallel items this paper presents a family of new criteria for cluster analysis. (Author)

Relations between standard statistical techniques for analyzing dichotomous data and ANOVA procedures are indicated. The need for usefulness of analyzing transformed data as opposed to direct analysis of dichotomous data are discussed. Required statistical procedures employing transformed data are outlined. (Author/AG)

The purpose of the present study was to determine whether a "natural" four-alternative multiple choice item represents the same psychological task as a five-choice item rescored as a four-choice item. (Author)