First- and second-round commentaries on an article by L. Guttman are presented. The following authors responded, with two articles each: (1) E. E. Roskam and J. Ellis; (2) P. H. Schonemann; (3) A. R. Jensen; (4) J. C. Loehlin; and (5) J.-E. Gustafsson. (SLD)

This paper is based in part upon a doctoral dissertation completed at the University of Missouri under the supervision of John F. McGowan.

Historically, most researchers conducting factor analysis have used exploratory methods. However, more recently, confirmatory factor analytic methods have been developed that can directly test theory either during factor rotation using "best fit" rotation methods or during factor extraction, as with the LISREL computer programs developed…

Argues that Jensen's article contains an inaccurate and misleading account of Spearman's work and distorts the basic concepts of factor analysis. The target article has failed in all its main objectives; its major failing is a result of the irrelevance of factor analysis to the study of group differences. (SLD)

A preliminary study examined the interrater reliability, factor structure, and convergent validity of the Haak Sentence Completion (in which the respondent is given a sentence stem and asked to provide the remainder of the sentence) using a three-point scoring system. The subjects were 100 boys ranging in age from 6 to 11 years who were randomly…

An experimental study examined the possibility that proximity error could bias results from semantic differential questionnaires. Proximity error occurs when, due to the ordering, or polarity, of the differential scales, one answer on the semantic differential results in another answer to a subsequent question being substantially changed from what…

A modified iterative factor analytic method was applied to item responses of 346 male students in four community colleges in order to construct three experimental scales for the measure of motivation. A fourth scale, which appears to be a measure of goal-deficiency, was also developed. The four scales--tentatively identified as Intrinsic…