The jackknife by groups and modifications of the jackknife by groups are used to estimate standard errors of rotated factor loadings for selected populations in common factor model maximum likelihood factor analysis. Simulations are performed in which t-statistics based upon these jackknife estimates of the standard errors are computed.…

Methods useful in identifying and assessing outcomes of relatively simple programs may not be practical or appropriate for complex programs and systems. Comparative case study methods are recommended for dealing with such global outcomes of planned organizational change. (Author)

A self-assessment study conducted by the American Association of University Women aimed to develop an in-depth profile of AAUW members in general and branch presidents in particular. A sampling method was used to make a valid reflection of the total membership. (MLW)

Ratings of social behavior and scores on the Bayley Mental Development Index (MDI) were obtained for 33,685 infants, eight months of age. A composite measure of sociability correlated .23 with total MDI scores, .26 on the socially loaded items, and .17 with the nonsocial items. (Author/RH)

Discusses (1) the use of chi square significance tests in social science and educational literature; (2) chi square in relation to sample size; (3) field difficulties with chi square analysis as exemplified in Milwaukee County Juvenile Court data; and (4) alternative methods for using chi square in field research. (Author/GC)

The paper describes the small sample stability of least square estimates of variance components within the context of generalizability theory. Monte Carlo methods are used to generate data conforming to some selected multifacet generalizability designs to illustrate the sampling behavior of variance component estimates. (Author/CTM)

Reports discrepancies between published outcomes from two international tests of science achievement: (1) Second International Assessment of Educational Progress (IAEP) administered in 1991; and (2) Third International Mathematics and Science Study (TIMSS) administered in 1995. States initial comparisons suggested outcome inconsistencies for 11…

Introduces a new technique for estimating the parameters of models with continuous latent data. To streamline presentation of this Markov Chain Monte Carlo (MCMC) method, the Rasch model is used. Also introduces a new sampling-based Bayesian technique, the DA-T-Gibbs sampler. (SLD)

This article describes methodological strategies, decisions, and issues that emerge when conducting qualitative research. In particular, topics such as situating the research design, sampling considerations, data collection methods, and the analytic and interpretive process are explored. Examples from published research are provided to illustrate…

Discusses some key statistical concepts in probabilistic and non-probabilistic sampling to provide an overview for understanding the inference process. Suggests a statistical model constituting the basis of statistical inference and provides a brief review of the finite population descriptive inference and a quota sampling inferential theory.…

Used two experiments to assess extent to which introductory psychology students' self-selection into experiments produced biased samples. Students chose between apparently different experiments with different descriptions and between individual and group sign-up slots. Results demonstrated that students sorted themselves into experiments and into…

Standards relating to sampling methodology are summarized, deviations from these standards in a random sample of 30 research reports are identified, and specific recommendations for improving sampling methods to enhance research applicability for practice are made. A high proportion of the studies examined had at least one major sampling…

The sampling variability and zeta-values of parameter estimates for misspecified structural equation models were examined. A Monte Carlo study was used. Results are discussed in terms of asymptotic theory and the implications for the practice of structural equation models. (SLD)

A method is presented for determining sample size that will achieve a pre-specified bound on confidence interval width for the interrater agreement measure "kappa." The same results can be used when a pre-specified power is desired for testing hypotheses about the value of kappa. (Author/SLD)

Simplicity and efficiency in design and estimation are all important in deciding on sampling strategies. A simple model is given and illustrated for four practical situations to show how a good sampling strategy should be selected. (Author)