Investigates the question of under what conditions can one infer that some observed relationship between two empirical variables reflects more than that they are both indicants of the same construct. (RC)

Described are two studies to clarify variables responsible for experimenter miscalculations. (Author/CL)

The author ponders the question, "How is 'evaluative research' defined?" (MM)

Critiques "The Statistical Analysis of Quasi-Experiments" by Achen and examines its relevance for historians. Discusses the problems that arise when quasi-experiments involving nonrandom assignment or nonrandom selection are analyzed as if they were true experiments. Concludes that Achen's book will help historians recognize these…

Daniel Linz and Edward Donnerstein criticize the research methods and conclusions of pornography researchers Dolf Zillmann and Jennings Bryant (who allege that consumption of pornography results in antisocial effects). Zillman and Bryant respond. (ARH)

Offers an explanation of why Cohn and Tronick's (1988) result replicates that of Kaye and Fogel (1980) in spite of important differences in the way interactive behavior is conceptualized, coded, and treated statistically. Suggests that stochastic variability in onset times has profound implications for the understanding of interaction process and…

Surveyed investigators (N=91) studying the menstrual cycle. Showed the assumption that researchers are unable to publish studies with nonsignificant findings to be unwarranted. Found much of the research did not lend itself to a hypothesis-testing model. A more important contribution to the likelihood of publication was research productivity.…

An examination of the strengths and weaknesses of the major types of epidemiologic studies suggests that, although the studies may contribute important knowledge regarding chronic diseases and other conditions, readers must carefully analyze the limitations of study design. (CB)

In some linear regression problems samples may be unwittingly drawn from a heterogeneous population. The exploratory procedure described in this paper can be used to detect heterogeneity in a regression problem associated with the intercept. (Author)

This article examines feminist research, neo-Marxist critical ethnography, and Freirian "empowering" research in order to reconceptualize validity within the context of openly ideological research. Issues of importance to openly ideological researchers are discussed. (MT)

A test for multisample sphericity based on the efficient scores criterion is obtained as an alternative to the likelihood ratio test developed by Mendoza. (Author)

Although contributions to AAMD (American Association on Mental Deficiency) journals remain high, the number of new contributors has diminished in the last 20 years. Results of a questionnaire show that most contributors to AAMD journals hold advanced degrees and that training is related to scholarly productivity. (Author/CL)

To avoid reduction in observational data resulting from correlational techniques for analyzing interpersonal interactions, a data-transformation method based on multidimensional scaling techniques was applied to the Family Interaction Coding System. Two resulting dimensions, prosocial-deviance and high-low involvement, were applied to observations…

Cover letters with and without pictures of the researcher were included with questionnaires mailed to a sample of 384 university alumni. The total number of returned questionnaires, after the initial mailing and two personalized follow-ups, were lower in the researcher-pictured cover letter conditions than in the control conditions. (Author/BW)

The empirical effects of adherence of details of the Total Design Method (TDM) approach to the design of mail surveys is discussed, based on the implementation of a common survey in 11 different states. The results suggest that greater adherence results in higher response, especially in the later stages of the TDM. (BW)