The effects of the violation of the assumption of homogeneity of regression on the Type I error rate and on the power of analysis of covariance are investigated. The results indicate that analysis of covariance is robust when sample sizes are equal. (Author/JKS)

In two experiments, recognition accuracy was compared between subjects who made frequency judgments and subjects who made recognition judgments. Results indicate that at least partially different information in memory is evaluated when judging frequency than when making recognition judgments and that this information facilitates recognition…

Three postulates are proposed concerning the manner in which persons infer the validity of propositions that do not necessarily follow logically from the information available. Implications of the proposed postulates for existing formulations of social inference and cognitive organization are discussed. (Editor/RK)

The partitioned-U procedure is outlined, a fundamental logical flaw in this procedure's avoidance of any direct test of the significance of the first discriminant function or largest coefficient of canonical correlation is pointed out, and two alternatives to the partitioned-U procedure are discussed. (Author/DEP)

Stresses the importance of methodology and some of its more stubborn problems. (Editor/RK)

This experiment attempted to support McMahan's (1973) attributional theory, which assumes that expectations reflect relatively fixed perceptions, and that people try to avoid making changes in these perceptions, and Frieze and Weiner's (1971) finding that success was attributed to internal factors more than was failure, while failure was more…

Preoperational and concrete operational kindergarten children received stimulus differentiation training, either with or without feedback, and then a series of discrimination learning problems in which a blank trial probe was used to detect a child's hypothesis after each feedback trial. Piagetian stage theory requires elaboration to account…

This study tested competing interpretations of IQ deficit in schizophrenic patients. One interpretation (concomitancy hypothesis) holds that IQ loss is a product of schizophrenic symptoms and is remedied as the symptoms remit. The second (prodromal hypothesis) holds that IQ deficit preceeds and facilitates the development of schizophrenic disorder…

Response latency (RL), accuracy, and confidence data were obtained from six subjects, each tested for 20 experimental sessions in a long-term recognition memory paradigm. Based on signal detection theory assumptions, functions were derived that described the relationship between RL and the separation of test item and criterion along a theoretical…

It is argued that research settings should be chosen with the whole experimental design in mind and that the availability of appropriate controls (groups or occasions for observation) should be as important as the suitability of the treatment group. (Author/AM)

Considers the hypothesis that thought results in the "reinterpretation" of inconsistent beliefs so as to make them more consistent with the initial attitude direction. The resulting cognitions, being more univocal would, in turn, produce attitude polarization. (Author/RK)

Internal and external subjects, who previously filled out Rotter's (1966) Internal-External scale, were asked to score the I-E scale of "another student". It was predicted that ratings of the "other" would increase in positivity to the extent the "other" scored as an interval. (Editor/RK)

Two stage multiple-comparison procedures give an exact solution to problems of power and Type I errors, but require equal sample sizes in the first stage. This paper suggests a method of evaluating the experimentwise Type I error probability when the first stage has unequal sample sizes. (Author/BW)

Two forms of naturalistic evaluation have appeared within the past decade: (1) a collection of qualitative techniques that are complimentary with conventional quantitative methods; and (2) an alternative paradigm that emphasizes the negotiation of multiple socially constructed realities, interdependence of facts and values, and the emergent…

Instructional alignment is the extent to which stimulus conditions match three instructional components. This paper demonstrates a new perspective in which instructional alignment generates larger effects in research and practice for less "cost" than other instructional constructs. (VM)