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91.
A closed form estimator of the uniqueness (unique variance) in factor analysis is proposed. It has analytically desirable properties—consistency, asymptotic normality and scale invariance. The estimation procedure is given through the application to the two sets of Emmett's data and Holzinger and Swineford's data. The new estimator is shown to lead to values rather close to the maximum likelihood estimator. 相似文献
92.
Inequalities among lower bounds to reliability: With applications to test construction and factor analysis 总被引:1,自引:0,他引:1
A chain of lower-bound inequalities leading to the greatest lower bound to reliability is established for the internal consistency of a composite of unit-weighted components. The chain includes the maximum split-half coefficient, the lowest coefficient consistent with nonimaginary common factors, and the lowest coefficient consistent with nonimaginary common and unique factors. Optimization theory is utilized to determine the conditions that are requisite for the inequalities. Convergence proofs demonstrate that the coefficients can be attained. Rapid algorithms obtain estimates of the coefficients with sample data. The theory yields methods for splitting items into maximally similar sets and for exploratory factor analysis based on a theoretical solution to the communality problem. 相似文献
93.
William C. Pedersen 《Motivation and emotion》2006,30(1):74-86
The current study examined the role of attributional processes on triggered displaced aggression and specified the conditions
wherein affect versus attributions would predict the degree of aggressive responding. Consistent with expectations, attributions
for a minor provoking event predicted the degree of aggression towards targets that had violated expectations or where a specific
attribution was provided. When no such expectancy violation occurred, only negative affect generated by the provocation predicted
aggression. Furthermore, results indicated that initial feelings toward a provoking target impacted aggressive responding
by influencing attributions made for a target's provoking action. When faced with a minor provocation, individuals were more
likely to spontaneously attribute that event to external causes for people they like (e.g., positive valence targets), thus
reducing the subsequent degree of aggressive retaliation. In contrast, for disliked targets, individuals were more likely
to attribute provoking behavior to internal causes, resulting in an increase in aggression. The new model provides a theoretical
extension to the cognitive-neoassociationistic perspective on aggression (L. Berkowitz, 1989, 1990, 1993).
相似文献
William C. PedersenEmail: |
94.
Two studies investigated the importance of phoneme awareness relative to other predictors in the development of reading and spelling among children learning a consistent orthography (Czech) and an inconsistent orthography (English). In Study 1, structural equation models revealed that Czech (n=107) and English (n=71) data were fitted well by the same predictors of reading and spelling. Phoneme awareness was a unique predictor in all models. In Study 2, Czech (n=40) and English (n=27) children with dyslexia showed similar deficits on phoneme awareness relative to their age- and spelling-matched control peers. Phoneme awareness appears to be a core component skill of alphabetic literacy, which is equally important for learners of consistent and inconsistent orthographies. 相似文献
95.
青少年的自尊与父母教育方式的关系——不同群体间的一致性与差异性 总被引:49,自引:4,他引:45
对895名初中阶段城乡青少年进行自尊和父母教育方式测量,考察青少年的自尊与父母教育方式的关系,以及这种关系在不同青少年群体中可能存在的差异。结果显示:(1)从总体上看,青少年的自尊与其报告的父母教育方式各维度之间有极显著或显著的正相关或负相关关系;(2)父母教育方式对青少年的自尊有较好的预测作用;(3)在不同青少年群体中,父母教育方式对自尊的影响存在某些差异。 相似文献
96.
Hua-Hua Chang 《Psychometrika》1996,61(3):445-463
Chang and Stout (1993) presented a derivation of the asymptotic posterior normality of the latent trait given examinee responses under nonrestrictive nonparametric assumptions for dichotomous IRT models. This paper presents an extention of their results to polytomous IRT models in a fairly straightforward manner. In addition, a global information function is defined, and the relationship between the global information function and the currently used information functions is discussed. An information index that combines both the global and local information is proposed for adaptive testing applications.This research was partially supported by Educational Testing Service Allocation Project No. 79424. The author wishes to thank Charles Davis, Xuming He, Frank Jenkins, Spence Swinton, William Stout, Ming-Mai Wang, and Zhiliang Ying for their helpful comments and discussions. The author particularly wishes to thank the Editor, Shizuhiko Nishisato, the Associate Editor, and three anonymous reviewers for their thoroughness and thoughtful suggestions. 相似文献
97.
Paul D. Retzlaff Eugene P. Sheehan 《Journal of psychopathology and behavioral assessment》1989,11(2):143-151
Response style in objective psychological testing is an important issue in the reliability and validity of tests as well as in the interpretation of test results. The MCMI provides two response-style indices, the validity scale and the weight factor. The present work presents an additional statistic to assess random response in subjects. The Consistency Coefficient is the correlation between the subjects' endorsement of even and odd items across the 20 MCMI scales. The distributions of 500 patient and 500 randomly generated profiles were compared. Good separation between these distributions was found. The subject data were extremely negatively skewed, whereas the randomly generated data were normally distributed. Data are presented that display positive and negative predictive values, as well as sensitivity and specificity across ranges of prevalence and cut score. These data facilitate the identification of subjects who respond to the MCMI in a random manner so that their scores can be interpreted accordingly. 相似文献
98.
99.
《The Journal of social psychology》2012,152(5):679-687
Abstract Psychological reactance, the theory that people resist attempts to constrain either their thoughts or their behaviors (J. W. Brehm, 1966), has been an influential concept in social psychology. In an attempt to measure reactance, J. Merz (1983) developed the Questionnaire for the Measurement of Psychological Reactance (QMPR). Subsequent researchers (S.-M. Hong & R. Ostini, 1989; R. K. Tucker & P. Y. Byers, 1987) have debated both the exact factor structure and the psychometric stability of the QMPR. In the present study, 898 undergraduates completed the QMPR. Factor analysis suggested that psychological reactance is multidimensional. The authors found 3 factors underlying the QMPR, but the QMPR provided unreliable estimates for each of those factors. According to the results, the QMPR as currently written is psychometrically unsatisfactory. 相似文献
100.
A general formulation is presented to derive the equation of motion and demonstrate thermodynamic consistency for several classes of phase-field (PF) and PF crystal (PFC) models. It can be applied to models with a conserved and non-conserved phase-field variable, describing either locally uniform or periodic stable states, and containing slow as well as fast thermodynamic variables. The approach is based on an entropy functional formalism previously developed in the context of PF models for locally uniform states [P. Galenko and D. Jou, Phys. Rev. E 71 (2005) p.046125] and thus allows to extend several properties of the latter to PF models for periodic states, i.e., PFC models. 相似文献