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儿童口语词汇获得年龄效应 总被引:3,自引:0,他引:3
获得年龄是指儿童第一次学会某个词的年龄。单词获得年龄效应是指早获得的词比晚获得的词加工快。该简要概述了获得年龄数据的收集以及获得年龄在成人词典加工中的作用,重点介绍了获得年龄效应与频率效应的关系的研究,并对获得年龄效应的机制进行了简要的评述。 相似文献
364.
Colin Camerer 《决策行为杂志》1988,1(2):77-94
People often believe in ‘illusory’ correlations between variables that are similar, but not actually correlated. This study suggests that judgments of organizational traits reflect illusory correlations, because subjects' perceptions of correlations between traits, and the predictions of Hage's (1965) ‘axiomatic’ theory, were more highly correlated with independent similarity ratings than with actual correlations between traits. Some methodological reasons why organizational-trait theories might unwittingly produce illusory correlation predictions are discussed, along with possible remedies. 相似文献
365.
Mary Ann Parris Stephens & Melissa M. Franks 《Current directions in psychological science》1999,8(5):149-152
This article addresses the multiple roles held by women involved in parent care and the ways in which these roles affect the women's well-being. Research on women's roles (including that of caregiver) has been guided by two opposing perspectives, the scarcity hypothesis and the expansion hypothesis. Findings from our studies of role quality, role combinations, and role spillover have provided abundant evidence that the lives of these women cannot be easilycaptured by either the scarcity or the expansion hypothesis alone. 相似文献
366.
Sample-duration effects on pigeons' delayed matching as a function of predictability of duration
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Urcuioli PJ DeMarse TB Lionello KM 《Journal of the experimental analysis of behavior》1999,72(3):279-297
Three experiments assessed the impact of sample duration on pigeons' delayed matching as a function of whether or not the samples themselves signaled how long they would remain on. When duration was uncorrelated with the sample appearing on each matching trial, the typical effect of duration was observed: Choice accuracy was higher with long (15-s) than with short (5-s) durations. By contrast, this difference either disappeared or reversed when the 5- and 15-s durations were correlated with the sample stimuli. Sample duration itself cued comparison choice by some birds in the latter (predictable) condition when duration was also correlated with the reinforced choice alternatives. However, even when duration could not provide a cue for choice, pigeons matched predictably short-duration samples as accurately as, or more accurately than, predictably long-duration samples. Moreover, this result was observed independently of whether the contextual conditions of the retention interval were the same as, or different from, those of the intertrial interval. These results strongly support the view that conditional stimulus control by the samples is partly a function of their conditioned reinforcing properties, as determined by the relative reduction in overall delay to reinforcement that they signal. 相似文献
367.
Challenge studies are often implemented for assessing whether a subject is sensitive to a certain agent or allergen. In particular, researchers test groups of subjects to determine if there really exists a causal relationship between some agent of interest and a response. To answer such a question, we need to detect the presence of the phenomenon in just one individual. Typically, however, there are a large number of unknown risk factors associated with the response and a potentially small population prevalence. Hence, standard statistical techniques, by averaging the treatment effect across the group, may miss a significant response of a single individual and lead to inconclusive results. We develop an alternative approach based on union-intersection testing that will allow a practitioner to correctly examine observations on an individual apart from the other subjects and test the hypothesis of interest: Does the phenomenon exist in the population? More specifically, we show how this technique adjusts for the multiple number of tests encountered when analyzing data for each individual subject separately. Furthermore, we demonstrate power calculations for the determination of sample size prior to performing the study. The performance of the union-intersection approach in comparison to linear models and semiparametric techniques is considered through sample size calculations and simulations. The union-intersection testing methodology out performs the Kolmogorov tests. However, the nested linear model performs as well if not better than the union-intersection tests. To illustrate the ideas presented in the paper, we provide an application in which we analyze psychological data collected by way of a challenge study design. 相似文献
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William O'Donohue Jeff Szymanski 《Journal of Rational-Emotive & Cognitive-Behavior Therapy》1993,11(4):207-222
The effectiveness of two hypothesized change mechanisms in cognitive therapy was investigated: logical analysis and empirical hypothesis testing. Thirty-eight spider phobics, as determined by performance on a behavioral avoidance test, were randomly assigned to either one of these two conditions or to a no-treatment control condition. Subjects participated in three group sessions. Outcome phobia questionnaire data suggested that both mechanisms produced desirable changes in a short period of time, with stronger evidence that logical analysis was superior to the control. Outcome from the behavior avoidance test and self-efficacy ratings failed to reach statistical significance but the trends were in the direction of positive change. Results are discussed in terms of the tripartite response dessynchrony hypothesis. Suggestions for future process research in cognitive therapy are provided.William O'Donohue, Ph.D., is an assistant professor of psychology at Northern Illinois University.Jeff Szymanski is a graduate student in clinical psychology at Northern Illinois University.The authors would like to thank Christine Casselles, Melissa McKelvie, Thomas M. Brown, Jill C. Rudman, Bonnie Schrieber, Amy Ray, Anne Valle, Lisa Herold, Jacqueline Ryan, Heather Barta, and Angela Leek for their assistance in this project. Moreover, the authors are grateful to Sol Feldman and Jane Fisher for their comments on an earlier version of this paper. 相似文献