Compared factor structures of the WISC and the WISC-R using the data for age groups 7.5, 10.5, and 13.5 years in the two standardization samples. Results demonstrated that the structures of the two scales are as similar as the structure of either scale is for different age groups. (Author)

Kaiser and Michael reported a formula for factor scores giving an internal consistency reliability and its square root, the domain validity. Using this formula is inappropriate if variables are included which have trival weights rather than salient weights for the factor for which the score is being computed. (Author/RL)

An iterative process is proposed for obtaining an orthogonal simple structure solution. At each iteration, a target matrix is constructed such that the relative contributions of the target majorize the original ones, factor by factor. The convergence of the procedure is proven, and the algorithm is illustrated. (SLD)

This research reports the development and psychometric properties of scores from the 10-item Short Index of Self-Directedness (SISD), drawn from the Temperament and Character Inventory (TCI; C. R. Cloninger, 1987/1992a) and the TCI-125 (C. R. Cloninger, 1992b). Factor structure, construct validity, internal consistency, and test-retest reliability…

The identification of two factors when one factor is expected is an artifact caused by using factor analysis on data that would be more appropriately analyzed with a unidimensional unfolding model. A numerical illustration is given, and ways to determine whether data conform to the unidimensional unfolding model are reviewed. (SLD)

A class of oblique rotation procedures is proposed to rotate a pattern matrix so that it optimally resembles a matrix that has an exact simple pattern. It is demonstrated that the method can recover relatively complex simple structures where other simple structure rotation techniques fail. (SLD)

Examined factor structure of Family-of-Origin Scale (FOS). Used confirmatory factor analysis to examine similarities of factor structure obtained in study of 162 gay and bisexual men with those proposed theoretically by test authors. Concluded that findings do not support theoretically proposed factor structure of FOS and that value of FOS is…

Family stress is examined across normative, moderate-risk, and high-risk samples with particular focus on the development of scales measuring components of stress from a single "daily hassles" questionnaire. A three-factor model, including interpersonal tension, financial problems, and child-related difficulties, was developed using confirmatory…

Examined the optimal value of "k" for promax factor rotations through a Monte Carlo study involving 10,080 factor analyses. Results show that in factor-analytic studies using promax, the value of "k" may be set appropriately at 2, 3, or 4. (Author/SLD)

Studied the unidimensionality of the 16 noncognitive scales of the Sixteen Personality Factor Questionnaire (16PF) and the hierarchical factor structure of the inventory. Results using the Schmid Leiman orthogonalization procedure (J. Schmid and J. Leiman, 1957) showed that the noncognitive multi-item composites could be factored into 16…

H. F. Kaiser, S. Hunka, and J. Bianchini have presented a method (1971) to compare two matrices of factor loadings based on the same variables, but different groups of individuals. The optimal rotation involved is examined from a mathematical point of view, and the method is shown to be invalid. (SLD)

Examined the factor structure of the Multidimensional Aptitude Battery (MAB) (D. Jackson, 1984) and the overlap between the MAB and the Wechsler Adult Intelligence Scales-Revised (WAIS-R) using a sample of 85 adults. Results show conditions under which the MAB is a suitable alternative to the MAB. The MAB is not suitable when detailed information…