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61.
Social factors and the psychobiology of depression: relations between life stress and rapid eye movement sleep latency. 总被引:2,自引:0,他引:2
We examined psychosocial factors (i.e., life stress) and biological factors (i.e., REM sleep latency) that are hypothesized to be of complementary importance for defining depressive subtypes in a sample of 61 nonpsychotic, endogenous major depressives. Subjects were evaluated on several diagnostic scales for life stress, on electroencephalographic sleep data, and on 2 symptom measures for depression. As predicted, persons with severe stress that occurred shortly before depression onset had essentially normal REM latency values; patients without such stress had reduced REM latency values. Both stress and REM latency were also associated with greater severity of self-reported depressive symptoms. Alternative explanations of these findings are discussed, with particular emphasis on different roles of pre-onset and post-onset stressors. 相似文献
62.
Diathesis-stress theories in the context of life stress research: implications for the depressive disorders. 总被引:13,自引:0,他引:13
Advances in the conceptualization and measurement of life stress in the past 2 decades raise several questions concerning traditional diathesis-stress theories of psychopathology. First, comprehensive measures of life stress force investigators to become more precise about the particular stressful circumstances hypothesized to interact with diatheses. Second, the influence of the diathesis on a person's life is typically ignored, which results in several types of possible bias in the assessment of life stress. Finally, information is available on diatheses and stress for specific disorders to provide a foundation for more empirically based hypotheses about diathesis-stress interactions. This possibility is outlined for depression. Such an approach provides the basis for developing broader, yet more specific, frameworks for investigating diathesis-stress theories of psychopathology in general and of depression in particular. 相似文献
63.
The mnemonic model of posttraumatic stress disorder (PTSD) proposed by D. C. Rubin, D. Berntsen, and M. K. Bohni presents some provocative and potentially insightful ideas about this mental disorder. D. C. Rubin et al. suggested that PTSD is caused and maintained through a "pathogenic memory" (D. C. Rubin et al., 2008, p. 985) of a negative event rather than by exposure to a traumatic event per se. The present authors examine the mnemonic model in the context of relevant diagnostic, theoretical, and clinical considerations. Specifically, to evaluate the arguments and evidence provided in support of the mnemonic model of PTSD, the present authors focus on 4 issues: (a) problems inherent with comparing a theoretical model (i.e., the mnemonic model) with a diagnostic model (i.e., the DSM-IV-TR model), (b) problems with not comparing the mnemonic model with relevant cognitive and memory models of PTSD, (c) problems with the degree to which the research reviewed provides support for the mnemonic model, and (d) concerns that memory in PTSD is confounded with the basic disorder, rather than causing PTSD. The present authors conclude with suggestions for future theory and research to help differentiate between memory's role in the origins of PTSD and memory's role in the clinical course of the disorder. 相似文献
64.
Kristen Renwick Monroe 《Political psychology》2008,29(5):699-736
What turns neighbors into genocidalists? Why do some stand by, while others risk their lives to help? A narrative analysis of interviews with rescuers, bystanders, and Nazi supporters during World War II focuses attention on self‐image, worldview, and cognitive categorization as critical influences. Rescuers, bystanders, and Nazis demonstrated dramatically different self concepts, yet identity constrained choice for all groups. A critical aspect of identity is relational: the sense of self in relation to others. Worldview, canonical expectations, and idealized cognitive models are critical determinants, with the ethical importance of values emanating not from particular values but from the integration of these values into the speaker's sense of self. Finally, cognitive categorization carries strong ethical overtones. The dehumanization that spurs perpetrators and the sense of moral salience that drives rescuers work through the cognitive classification of “the other.” 相似文献
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66.
Pastoral Psychology - 相似文献
67.
Limited‐information goodness‐of‐fit testing of diagnostic classification item response models
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Mark Hansen Li Cai Scott Monroe Zhen Li 《The British journal of mathematical and statistical psychology》2016,69(3):225-252
Despite the growing popularity of diagnostic classification models (e.g., Rupp et al., 2010, Diagnostic measurement: theory, methods, and applications, Guilford Press, New York, NY) in educational and psychological measurement, methods for testing their absolute goodness of fit to real data remain relatively underdeveloped. For tests of reasonable length and for realistic sample size, full‐information test statistics such as Pearson's X2 and the likelihood ratio statistic G2 suffer from sparseness in the underlying contingency table from which they are computed. Recently, limited‐information fit statistics such as Maydeu‐Olivares and Joe's (2006, Psychometrika, 71, 713) M2 have been found to be quite useful in testing the overall goodness of fit of item response theory models. In this study, we applied Maydeu‐Olivares and Joe's (2006, Psychometrika, 71, 713) M2 statistic to diagnostic classification models. Through a series of simulation studies, we found that M2 is well calibrated across a wide range of diagnostic model structures and was sensitive to certain misspecifications of the item model (e.g., fitting disjunctive models to data generated according to a conjunctive model), errors in the Q‐matrix (adding or omitting paths, omitting a latent variable), and violations of local item independence due to unmodelled testlet effects. On the other hand, M2 was largely insensitive to misspecifications in the distribution of higher‐order latent dimensions and to the specification of an extraneous attribute. To complement the analyses of the overall model goodness of fit using M2, we investigated the utility of the Chen and Thissen (1997, J. Educ. Behav. Stat., 22, 265) local dependence statistic for characterizing sources of misfit, an important aspect of model appraisal often overlooked in favour of overall statements. The statistic was found to be slightly conservative (with Type I error rates consistently below the nominal level) but still useful in pinpointing the sources of misfit. Patterns of local dependence arising due to specific model misspecifications are illustrated. Finally, we used the M2 and statistics to evaluate a diagnostic model fit to data from the Trends in Mathematics and Science Study, drawing upon analyses previously conducted by Lee et al., (2011, IJT, 11, 144). 相似文献
68.
Philosophers of history posit a class of concepts known as colligatory concepts that contribute to historical consciousness and that refer specifically to historical events. Although analysis has identified colligatory concepts in historical discourse, these concepts have not yet been investigated empirically. We present a new methodology for studying these concepts and historical consciousness more broadly, as well as pilot data supporting the methodology. Our aim in the pilot study was to establish whether colligatory concepts are processed differently from control concepts when subjects are asked to judge historical statements. We compared judgments of colligatory concepts in healthy participants and in a patient group with impaired working memory cognitive processing capacity. Forty healthy, college-educated participants and 25 patients with Parkinson's disease were asked to rate narrative sentences containing historical content and an equal number of identically constructed narrative sentences of equal length but devoid of historical content. All participants rated their pre-test interest in history as relatively low (mean 5 out of 7). Though no group differences emerged, historical sentences were judged by both groups (total N = 65) to be significantly different from non-historical sentences across dimensions of interestingness, meaningfulness, likeability, complexity, thought provoking-ness, and truth content. Interestingly, historical sentences were judged to be truer than control sentences even though participants were not interested in and presumably knew little about history. The neurocognitive system appears to process sentences with historical content separately from sentences without historical content. The methodology described here appears to be a valid approach for study of processing of historical content of sentences. 相似文献
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