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11.
Frederic M. Lord 《Psychometrika》1952,17(2):181-194
Under certain assumptions an expression, in terms of item difficulties and intercorrelations, is derived for the curvilinear correlation of test score on the ability underlying the test, this ability being defined as the common factor of the item tetrachoric intercorrelations corrected for guessing. It is shown that this curvilinear correlation is equal to the square root of the test reliability. Numerical values for these curvilinear correlations are presented for a number of hypothetical tests, defined in terms of their item parameters. These numerical results indicate that the reliability and the curvilinear correlation will be maximized by (1) minimizing the variability of item difficulty and (2) making the level of item difficulty somewhat easier than the halfway point between a chance percentage of correct answers and 100 per cent correct answers. 相似文献
12.
Lord CG Paulson RM Sia TL Thomas JC Lepper MR 《Journal of personality and social psychology》2004,87(6):733-749
Attitude representation theory (C. G. Lord & M. R. Lepper, 1999) explains both attitude-behavior consistency and attitude change with the same principles. When individuals respond evaluatively to an attitude object, they activate and combine assumptions about the attitude object with perceptions of the immediate situation. The assumptions activated can vary across time, even without additional information. Previous research has shown that individuals activate exemplars when answering attitude questions, attitude reports vary with the valence of the assumptions activated, and activating differently liked exemplars reduces attitude-behavior consistency. The present research completed study of the theoretical implications of exemplar stability by showing that individuals with temporally unstable exemplars, whether spontaneous (Experiment 1) or manipulated (Experiments 2 and 3), are more susceptible to subsequent attitude change than are individuals with stable exemplars. 相似文献
13.
Heyman RE Chaudhry BR Treboux D Crowell J Lord C Vivian D Waters EB 《Behavior Therapy》2001,32(1):107-122
Using three different samples of couples (clinic, nondistressed community, and engaged), we found that 15 minutes was sufficient to witness enough behavior to make reliable (i.e., internally consistent) estimations of most Rapid Marital Interaction Coding System (Heyman & Vivian, 1993) code frequencies. Ten minutes is sufficient for many codes of interest. The ease in which "how much time is necessary" calculations can be made should entice behavioral investigators from a variety of content areas to publish such figures. By empirically investigating a factor that in most fields becomes reified through convention, investigators can conduct observational research that is both maximally efficient and maximally scientifically defensible. 相似文献
14.
Christopher D. Ratcliff Michael Czuchry Nikki C. Scarberry Jennifer C. Thomas Donald F. Dansereau Charles G. Lord 《Journal of applied social psychology》1999,29(5):994-1009
An important application of psychological principles involves increasing intentions to engage in activities that, although admittedly beneficial, are often not initially appealing (e.g., studying, quitting smoking, dieting). The present study tests the utility of directed thinking as a tool for eliciting intentions to engage in such activities. Undergraduate students were directed to think either about the reasons why people should find studying enjoyable or about the actions that people might take to make studying enjoyable. Regardless of whether they thought as individuals or in cooperating dyads, students who thought about actions later reported greater intentions to spend time studying than did students who thought about reasons. The results have both theoretical and practical significance. 相似文献
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Lord CE 《The American psychologist》2010,65(8):815-826
Autism is the most commonly studied of a spectrum of developmental disorders that are believed to be neurobiologically based but which, at this point, for lack of good biomarkers, are defined purely by behavior. In the last 20 years, the definition of autism has shifted in emphasis from extreme aloofness and positive signs of abnormality in repetitive and sensorimotor behaviors to a greater awareness of the importance of more subtle reciprocal social communication deficits as core features. Standard diagnostic instruments were developed for research purposes to acquire information both through caregiver interviews and direct clinical observation. Use of these instruments in clinical practice resulted in major improvements, which in turn affected research results. These results yielded further improvements that led to changes in clinical practice over time. The synergism between research and clinical practice in the understanding of autism is discussed. 相似文献
17.
Beth Lord 《British Journal for the History of Philosophy》2013,21(6):1085-1106
This paper examines Spinoza's remarks on women in the Political Treatise in the context of his views in the Ethics about human community and similitude. Although these remarks appear to exclude women from democratic participation on the basis of essential incapacities, I aim to show that Spinoza intended these remarks not as true statements, but as prompts for critical consideration of the place of women in the progressive democratic polity. In common with other scholars, I argue that women, in Spinoza's system, are deprived of freedom and political participation not by their essential natures, but by their social and historical circumstances. I differ from other scholars, however, in basing this conclusion on the different critical functions of the Political Treatise and the Ethics. Following that critical comparison, I consider Spinoza's views on the `natural right' of women and their equal capacity for political participation in terms of his arguments for the compositional similarity of men and women. Finally, I argue that Spinoza offers an explanation for women's actual disempowerment through his account of economic dependence within marriage. 相似文献
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The purpose of this paper is to describe the prevalence of self‐reported types of extradyadic romantic and sexual activity among adult Norwegians and to explore the role of infidelity in breaking up a permanent relationship. The results are based on 1,001 web interviews with persons ranging in age from 18 to 67 years. The majority of respondents reported having engaged in some kind of extradyadic romantic and/or sexual activity. Forty‐five percent of the women and 39% of the men claimed they had experienced a previous breakup from a marriage or cohabiting relationship. Among those aged 50 years or older, the most important reasons for breaking up a previous relationship were infidelity (38%) and lost love (38%). More men (44%) than women (33%) reported infidelity. Respondents younger than 50 years were more motivated by boredom. Among respondents below the age of 50 years, the most frequently reported reasons for considering termination of a present relationship were quarreling (37%), poor sex life (29%), and “other” reasons (25%). Accordingly, infidelity was not identified as an essential factor for considering a breakup from the present relationship. 相似文献
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