Multilevel models are often used to evaluate hypotheses about relations among constructs when data are nested within clusters (Raudenbush & Bryk, 2002), although alternative approaches are available when analyzing nested data (Binder & Roberts, 2003; Sterba, 2009). The overarching goal of this article is to suggest when it is appropriate…

The "p"-median clustering model represents a combinatorial approach to partition data sets into disjoint, nonhierarchical groups. Object classes are constructed around "exemplars", that is, manifest objects in the data set, with the remaining instances assigned to their closest cluster centers. Effective, state-of-the-art implementations of…

A description is given of a general method for studying partitions. The main focus is with the analysis of relationships among several different partitions of the same items for the explorations as well as confirmation of structural relationships. A partition is defined as a set of mutually exclusive clusters of items; however, this paper deals…

The basic question asked in this research was whether it is possible, through training, to influence a subject's preference for encoding a particular attribute. (Author/RK)

Results indicated that availability of categories rather than frequency of words seemed most crucial in determining developmental changes in clustering efficiency. (Authors)

The purpose of this paper is to suggest a technique of cluster analysis which is similar in aim to the Interactive Intercolumnar Correlation Analysis (IICA), though different in detail. Two methods are proposed for extracting a single bipolar factor (a "contrast compenent") directly from the initial similarities matrix. The advantages of this…

This report forms the background for some current efforts to develop computer-based scoring systems for One-Word Sentence Completion data. A general discussion of response grouping problems and a three-way frequency table for data reduction are included. In addition, six "structural" response variables are defined. The report concludes with an…

This paper describes the practical steps employed in controlling interview data generated from a research project investigating teachers' perspectives on the worth of a sex equity educational demonstration project. These perspectives were then considered as value frameworks that might be used to formulate and interpret a naturalistic-responsive…