A case study of a survey of new students made at a postsecondary vocational-technical school illustrates several sampling problems, including sample size, target population definition, determination of research purposes, costs, error tolerance, accuracy, and interpretation of research results for use by policymakers. (RW)

This research note examines respondent-nonrespondent bias in a statewide population survey. The findings indicate general support for using master lists in the selection of respondents for participation in a large mail questionnaire survey. Two papers follow which react to this information. (Author/CT)

This study investigated the anorectic's experience in daily living using the Experience Sampling Method. Results suggest that anorectics spend more time alone and experience lower average affect than other young single women. (Author/GK)

Brunswik's concept of representative design is reviewed with special reference to studies of clinical bias. Limitations of single-stimulus, actor-script, and serial replications are discussed. No satisfactory alternatives exist to adequate sampling of stimulus persons. Various attributes that are found in population must be properly represented in…

Examines parental sex role attitudes in relation to parental child rearing values of independence granting and pressure for achievement. Subjects of the study were natural mothers and fathers of White, middle class, two-parent families. (Author/DA)

Results indicate the Marital Interaction Coding System is a dependable and valid measure of marital interaction. Generalizability theory is cost effective and provides quality data. It presents a comprehensive view of reliability and validity. (JAC)

The study compared the productions of 35 articulation impaired children (ages 3 to 10) obtained by picture elicited single word and connected speech sampling methods. Productions were compared on the basis of both the number and type of errors made under the two testing conditions. (Author/PHR)

The effects of sampling biases upon research studies requiring different time commitments of Ss in mother-infant studies were examined. Twenty mothers who participated in 35 hours of observation were compared with 17 mothers who refused to participate but completed a questionnaire. Questionnaire responses did not differentiate the two groups.…

Factors that influence the sample size necessary for longitudinal evaluations include the nature of the evaluation questions, nature of available comparison groups, consistency of the treatment in different sites, effect size, attrition rate, significance level for statistical tests, and statistical power. (Author/GDC)

Computer simulations were employed to investigate sample sizes needed for item analysis when one's primary purpose is to rank order items in terms of indices of quality or to compare indices of quality against a fixed criterion. Necessary sample sizes were much smaller than those indicated by the literature. (Author/JKS)

A Monte Carlo technique was used to investigate the effect of the differences in covariate means among treatment groups on the significance level and the power of the F-test of the analysis of covariance. (Author/GDC)

A computer program to generate individualized objective test forms for use in a Student Faced Statistics (SPS) course is described. The program features disproportionate sampling from different item domains and enhanced character generation facility for test printing purposes. (Author)

An expanded multiple matrix sampling procedure to collect assessment data for health education courses in upper elementary and junior high schools is outlined. This supplement to the Cooperative Health Education Test provides data at the school building and district levels. (JMF)

Flexibility in evaluative research design does not necessitate the abandonment of randomly constructed comparison groups. Three designs are reviewed which provide at least the option of randomization while maintaining great flexibility. The strengths and weaknesses of the designs are discussed. (Author)

This study demonstrates that multiple matrix sampling procedures can be used to collect assessment data efficiently, unabstrusively, and reliably. (MB)