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The polyserial correlation coefficient 总被引:1,自引:0,他引:1
The polyserial and point polyserial correlations are discussed as generalizations of the biserial and point biserial correlations. The relationship between the polyserial and point polyserial correlation is derived. The maximum likelihood estimator of the polyserial correlation is compared with a two-step estimator and with a computationally convenient ad hoc estimator. All three estimators perform reasonably well in a Monte Carlo simulation. Some practical applications of the polyserial correlation are described.By coincidence, the first author and the second and third authors learned that they were working independently on closely related problems and, consequently, decided to write a jointly authored paper. 相似文献
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Emilia Dowling Brian Cade† Douglas C. Breunlin‡ Neil Frude§ Philippa Seligman 《Journal of Family Therapy》1982,4(1):61-72
This paper describes the development of the training programme offered at the Family Institute in Cardiff and presents the results of a retrospective survey reflecting the 'consumers' views of the programme. Questionnaires were sent to all students who had trained at the Institute between 1972 and 1977, to elicit information about their views of the placement, as well as their post-qualifying experience, activities and interest in family therapy. A briefer preliminary report has been published earlier (Dowling and Seligman, 1980). 相似文献
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This study was designed to determine (a) what dimensions underlie emotional reactions to news events, (b) whether these dimensions are independent, (c) whether reactions to major news events are similar for different groups of people, and (d) whether a simple method could be developed for evaluating emotional reactions to news events. Subjects rated the similarity of their emotional reactions to 20 page-one newspaper stories in a paired-comparison task. The data were multidimensionally scaled using the KYST computer program. Two dimensions emerged that accounted for 89% of the judgment variance: pleasure/displeasure and degree of arousal. Interpretation of these dimensions was verified using a semantic differential task. The two dimensions were not independent. They were related by a U-shaped function: News events farther from evaluative neutrality were judged more arousing. A second study with 40 news events and a different subject population replicated these findings. Subjects' ratings of news events on three scales (happy, important, and exciting) were sufficient to recover the KYST dimensions. The theoretical and practical implications of these. results are discussed. 相似文献
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The storage size metaphor used by Ornstein to explain subjective estimations of the length of time a task had lasted is contrasted with a recall hypothesis on the basis of the distinction between accessibility and availability. The different hypotheses were tested using a design similar to one which measured recall and recognition of common and uncommon words. Results showed that although an equivalent number of words were still in store for both groups, subjects who had learnt common words showed better recall and judged the learning task to have lasted longer. The results are interpreted as being in favour of the recall hypothesis. A preliminary study showed higher recall and longer time estimations for subjects who had performed a semantic orienting task in a levels-of-processing experiment. 相似文献
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This study assessed the ability of certain variables to predict which men would be more domineering in conversations with a woman and/or with a man. The variables included men's self-reported sexually aggressive behavior and several components comprising a personality profile labeled “Hostile Masculinity.” As expected, these variables successfully predicted domineering behavior toward the female but not toward the male. These findings supported theories hypothesizing that men's desire to control women and men's antisocial behavior toward them are due to specific rather than to general factors (i. e., evolutionary and feminist theorizing). © 1994 Wiley-Liss, Inc. 相似文献
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