Methods for comparing the suitability of alternative models for covariance matrices are examined. A cross-validation procedure is suggested and its properties examined. A series of examples using longitudinal data are examined. (Author/JKS)

Current computer programs for analyzing linear structural models will apparently handle only two types of constraints: fixed parameter and equal parameters. In this paper, a method for imposing several types of inequality of parameter constraints is described. Several examples are presented. (Author/JKS)

An alternative analysis of the two-group single response variable design is proposed. It involves the classification of experimental units to populations represented by the two groups. Three real data sets are provided to illustrate the utility of the classification analysis. A table of sample sizes required for the analysis is presented.…

To determine the effect of violating the assumption of homogeneity of covariance for the Tukey Wholly Significant Difference (WSD) test, Monte Carlo simulations varied the number of treatment groups, sample size, and degree of covariance heterogeneity. As covariance heterogeneity was increased, the empirical significance levels increased beyond…

Procedures suggested by Joreskog for performing exploratory factor analysis were evaluated. An in-depth analysis of psychological test scores of junior high school students was conducted. Procedures using exploratory and confirmatory techniques were found to produce misleading results in some instances. (Author/DWH)

The need for multiple comparison procedures for repeated measures means employing a pooled estimate of error variance to conform to the sphericity assumptions of the design in order to provide a valid test is discussed. An alternative approach which does not require this assumption is presented. (Author/JKS)

Examined correlations between pre- to posttreatment changes in beliefs and changes in treatment-outcome measures within the context of a previous study of rational-emotive therapy. Obtained reliable correlations between changes in beliefs and changes in emotional distress. This relationship occurred in control conditions as well as in treatment…

Despite Spitz's (1982) contention that his conclusions are necessarily in conflict with those arising from factor analysis, this article demonstrates how results from factor analysis can provide insights into data he cites. (Author/MP)

Reports the results of a demographic survey of 160 interpreters. The following categories were used: (1) personal characteristics, (2) family background, (3) educational background, (4) spoken language background, (5) sign language background, (6) contact with deaf community, (7) interpreting background, (8) interpreting experience, (9)…

Alternating least squares and optimal scaling are presented as two approaches to the quantitative analysis of qualitative data. A variety of statistical approaches to this problem are discussed. Three examples are presented. (JKS)

A new method is proposed for a simultaneous factor analysis of dichotomous responses from several groups of individuals. The method makes it possible to compare factor loading pattern, factor variances and covariances, and factor means over groups. Generalized least squares is used as the estimation procedure. (Author/JKS)

Discusses the changes occurring between 1976 and 1978 in the retirement status and expectations of a representative national sample of men aged 57-64 in 1978 and in the attitudes toward work and retirement of a representative national sample of retirees who in 1978 ranged between age 57 and 71. (CT)

A particular strategy for investigating effects from a multivariate analysis of variance (MANOVA) is proposed. The strategy involves multiple two-group multivariate analyses. The analysis strategy is described in detail and illustrated with real data sets. (Author/JKS)

Potential sources of bias are classified as ethical compromises, value inertias, or cognitive limitations. Thirteen specifics of intuitive thinking and judgmental processes are described. The author wishes to alert naturalistic evaluators to common failings. This list can be a useful checklist in reducing, integrating and drawing inferences from…

A pilot test to survey the collection of occupational detail and the ability of employees to accurately report the number of job openings is described. Discusses the method of soliciting participation, the nature of the data to be collected, and the format of the survey questionnaires. (CT)