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911.
Paul H. Jackson 《Psychometrika》1979,44(2):251-252
Use of the same term split-half for division of ann-item test into two subtests containing equal [Cronbach], and possibly unequal [Guttman], numbers of items sometimes leads to a misunderstanding about the relation between Guttman's maximum split-half bound and Cronbach's coefficient alpha.Coefficient alpha is the average of split-half bounds in the Cronbach sense and so is not larger than the maximum split-half bound in either sense whenn is even. Whenn is odd, however, splithalf bounds exist only in the Guttman sense and the largest of these may be smaller than coefficient alpha. 相似文献
912.
913.
Subjects searched through 2, 4, 6, and 8 digit arrays for a target digit, which, when present, was half the time represented once, and half the time twice in the array. Search latencies were shorter under the dual than the single target condition, supporting a self terminating model of search through these displays. 相似文献
914.
Jackson JP 《History of psychology》2000,3(3):239-261
Psychologists testified at the trials of Brown v. Board of Education and helped write briefs that were submitted to the Supreme Court on appeal. Psychologists were once proud of what they did in Brown but are now seen as liberal reformers who masked their political wishes in the guise of social science. The argument that psychologists involved with Brown were social reformers rather than objective scientists dates to the segregationist critique of Brown. The author traces the history of the critique of the Brown psychologists from its segregationist origins to its acceptance by mainstream social scientific and historical scholars. The author concludes that the critique is based on a misreading of what the Brown psychologists did during the litigation. 相似文献
915.
Negative and positive health effects of caring for a disabled spouse: longitudinal findings from the caregiver health effects study 总被引:1,自引:0,他引:1
Data from the first 2 waves of the Caregiver Health Effects Study (n = 680) were analyzed to examine the effects of changes in caregiving involvement on changes in caregiver health-related outcomes in a population-based sample of elders caring for a disabled spouse. Caregiving involvement was indexed by levels of (a) spouse physical impairment, (b) help provided to the spouse, and (c) strain associated with providing help. Health-related outcomes included perceived health, health-risk behaviors, anxiety symptoms, and depression symptoms. Increases in spouse impairment and caregiver strain were generally related to poorer outcomes over time (poorer perceived health, increased health-risk behaviors, and increased anxiety and depression), whereas increased helping was related to better outcomes (decreased anxiety and depression). Results suggest that caring for a disabled spouse is a complex phenomenon that can have both deleterious and beneficial consequences. 相似文献
916.
917.
12 Jewish inmates scored significantly higher than 1497 non-Jewish inmates on a measure of intelligence, the Raven's Standard Progressive Matrices. Interview findings indicated that the present Jewish inmates were never very involved in the practice of Judaisn and were not strongly integrated into their local Jewish communities. 相似文献
918.
Sarah M. Dunkel‐Jackson Mark R. Dixon Susan Szekely 《Journal of applied behavior analysis》2016,49(3):705-710
The present investigation attempted to teach self‐control to 3 adults who had been diagnosed with autism spectrum disorder. Using a self‐control training procedure that coupled a gradual fading of delay to access a large delayed reinforcer with a concurrent work requirement, each participant was exposed to conditions in which baseline levels of choices for large delayed reinforcers and task engagement increased 10‐fold. Furthermore, generalization effects were partially demonstrated in a novel context. 相似文献
919.
920.
Decision Pattern Analysis as a General Framework for Studying Individual Differences in Decision Making 下载免费PDF全文
This paper investigated decision pattern analysis (DPA) as a general and standard framework for studying individuals' consistent decision making behavior within and between contexts. DPA classifies decisions on the basis of judgement accuracy and the goal orientation of the decided‐upon action. Over repeated decisions, patterns of individuals' decision behavior are described by five variables: competence, optimality, recklessness, hesitancy and decisiveness. A fictitious medical decision making test and three standard cognitive ability tests (extended with confidence ratings and a ‘submit answer for marking’ decision) were used to investigate the psychometric properties of these DPA variables. Internal consistency of the decision patterns ranged from good to excellent. Convergent validity was assessed via cognitive abilities, metacognitive confidence and a control criterion imposed on confidence that determines the decision to be made: the point of sufficient certainty. Personality variables were included to assess discriminant validity. As hypothesised, cognitive abilities showed positive correlations with competence and optimality. High confidence, low points of sufficient certainty and a greater discrepancy between them were associated with higher decisiveness and recklessness, and lower hesitancy. Personality measures showed mixed and generally weak correlations with the DPA variables. These convergent and discriminant results also held after controlling for all variables in regression. The results provide preliminary psychometric support for DPA as a general framework of behavioral decision making. DPA has the potential to be exploited in many contexts for uses that, to date, have been unachievable in a psychometrically valid manner. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献