The authors discuss limitations of research techniques and raise questions about some of the results of a study designed to train nonprofessionals for community mental health project leadership. (BY)

Reviews various problems which create problems in research design for the classroom and advocates a divorce between research and evaluation. Bibliography. (MB)

Describes the need for industrial arts to identify content and method through discipline structures and processes. A recommended research procedure is included. (GR)

Includes 55-item reference list on teacher effectiveness. (JES)

This article reviews some of the less well-known hypothesis tests for variance, how they are employed, and how the results may be interpreted. Tests include testing for a single variance and the T-test for correlated variances. (CT)

Analyzes 16 studies of child-abuse treatment in terms of methods and findings, and suggests how future studies may be made more useful to practitioners. (Author/RH)

Examines the influence of statistical significance on reviewers' recommendations for the acceptance or rejection of a manuscript for publication. Discusses the concept of power and the importance of effect size in the evaluation of research findings. (WAS)

The use of theoretical models in impact assessment can heighten the power of experimental designs and compensate for some deficiencies of quasi-experimental designs. Theoretical models of implementation processes are examined, arguing that these processes are a major obstacle to fully effective programs. (Author/CM)

Measurement of change is essential for documenting the effects of social programs, for refining social-educational programs, and for guiding policy decisions about resource allocation. (CJ)

A survey of online searchers' perceptions of seven database vendors over 13 service-related characteristics resulted in DIALOG being ranked first for all attributes. A statistically significant relationship between overall preference and frequency of use was demonstrated, with reliability, variety, and flexibility the most highly ranked…

This Monte Carlo study was designed to investigate empirically the efficacy of three statistical strategies for estimating the relationships in extreme group designs in terms of estimation of correlation, power and mean square error for the correlation. Alf and Abrahams's "covariance information statistic" proved to be the best strategy.…

Discusses four design issues related to the development or selection of an appropriate measurement instrument for evaluation or research in nutrition education: data sources, response format, collection mode, and referent. (DC)

Reviews past studies on research in natural history museums and science centers, proposes a taxonomy of exhibits in museum settings, and focuses attention of factors which should be considered when studying/learning in these settings. Also presents potentially productive methods of conceptualizing research and suggests possible future lines of…

Issues of reliability and validity in ethnographic design are compared to their counterparts in experimental design. Threats to the credibility of ethnographic research are summarized and categorized. Strategies intended to enhance credibility (study design, data collection, data analysis, and presentation of findings) are incorporated throughout…