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When separate contingency tables are collected from each S or experimental unit, two null hypotheses concerning the association between the attributes can be tested: (a) No S shows any association, and (b) there is no mean association over the population of Ss. In almost all psychological data, the association varies among Ss, and the population hypothesis (Hypothesis b) is appropriate. Common contingency-table methods (e.g., log-linear models) test Hypothesis a and have a positive bias. To test Hypothesis b, the association should be compared with an empirical estimate of its variability, as in the analysis of variance, not with the multinomial sampling variability of the observations. Nine test statistics were examined by simulation. For dichotomous classifications, the best test was a t test on the log odds ratio. In larger tables and multiway designs, a Hotelling statistic was appropriate.

Recall of print material benefits from spacing repetitions of that material, an effect often attributed to varied encodings induced by changes in contextual cues. We examined an alternative explanation: retrieving earlier presentations during later presentations strengthens memory traces, the more so the greater the difficulty of such retrieval. In four experiments we found that (a) study-phase retrieval contributes to the benefits of spacing and (b) inducing variation via changes in ad formatting and content can be counterproductive at long spacing intervals, apparently because such changes decrease the likelihood that earlier presentations will be retrieved during later presentations. (c) 2005 by JOURNAL OF CONSUMER RESEARCH, Inc..

This research draws on ideas about emotion-related appraisal tendencies to generate and test novel propositions about intergroup emotions. First, emotion elicited by outgroup category activation can be transferred to an unrelated stimulus (incidental emotion effects). Second, people predisposed toward an emotion are more prejudiced toward groups that are likely to be associated with that emotion. Discussion focuses on the implications of the studies for a more complete understanding of the nature of prejudice, and specifically, the different qualities of prejudice for different target groups

Three experiments used a signal detection model to demonstrate that repetition blindness (N. Kanwisher, 1987) reflects a reduction in sensitivity (d') for the detection of repeated compared with unrepeated visual targets. In Experiment 1, repetition blindness (RB) was found for rapid serial visual presentation (RSVP) letter sequences, whether the visual targets were specified by category membership (vowels) or as 1 of 2 prespecified letters (e.g., A or O). In Experiment 2, RB was found to a similar degree even when the 1st critical item was displayed for twice as long as the other list items, although overall performance was considerably improved. Experiment 3 found RB for displays containing just 2 simultaneously presented letters. These results support Kanwisher's (1987) account of RB as a genuine perceptual effect, and rule out alternative accounts of RB as the result of response bias, output interference, or guessing biases.In repetition blindness (RB), people are considerably less accurate at reporting two visually presented items if they are identical or similar than if they are different (Bjork &

Empirical tests of the diathesis-stress component of A. T. Beck's (1976; A. T. Beck, A. J. Rush, B. F. Shaw, & G. Emery, 1979) cognitive theory of depression have generally not yielded positive results. The resulting focus on conceptual and methodological concerns has diverted attention from the more fundamental issue of how validly vulnerability is measured. The present investigation uses the Dysfunctional Attitude Scale (DAS; A. N. Weissman, 1979; A. N. Weissman & Beck, 1978), the most commonly used measure of vulnerability in this area, but adopts a more in-depth approach by examining DAS factors in addition to the typical total score. This study involved a sample of undergraduates who had never before taken a college-level examination. The dimension of the DAS measured by the Perfectionistic Achievement factor had the strongest relationship to increased depressive symptoms in response to poorer-than-expected performance on the examination. Implications for future research in this area are discussed.

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