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141.
Because of the aperture problem, local motion measurements must be combined across space. However, not all motions should be combined. Some arise from distinct objects and should be segregated, and some are due to occlusion and should be discounted because they are spurious. Humans have little difficulty ignoring spurious motions at occlusions and correctly integrating object motion, and are evidently making use of form information to do so. There is a large body of theoretical and empirical evidence supporting the importance of form processes involving junctions in the way motion is integrated. To assess the role of more complex form analysis, we manipulated nonlocal form cues that could be varied independently of local junctions. Using variants on diamond and plaid stimuli used in previous studies, we found that manipulations distant from the junctions themselves could cause large changes in motion interpretation. Nonlocal information often overrides the integration decisions that would be expected from local cues. The mechanisms implicated appear to involve surface segmentation, amodal completion, and depth ordering. 相似文献
142.
Neuroimaging of declarative memory in schizophrenia 总被引:5,自引:0,他引:5
The past three decades have seen tremendous growth in our understanding of the cerebral underpinnings of schizophrenia. including the neural correlates of the cognitive impairment seen in this syndrome. In this article we review the role that structural and functional neuroimaging has played in elucidating the cerebral basis for the declarative memory deficits associated with schizophrenia. Memory impairment in schizophrenia appears to involve abnormal connectivity between the prefrontal cortex and three regions important in normal learning and memory: the hippocampus, thalamus, and cerebellum. 相似文献
143.
Distress and Internalized Homophobia Among Lesbian Women Treated for Early Stage Breast Cancer 总被引:1,自引:1,他引:0
Bonnie A. McGregor Charles S. Carver Michael H. Antoni Sharlene Weiss Susan E. Yount & Gail Ironson 《Psychology of women quarterly》2001,25(1):1-9
A convenience sample of 57 lesbian women who had been recruited for a study of adjustment to breast cancer completed measures of internalized homophobia, degree of disclosure of sexual orientation, social support, self-esteem, and distress. Consistent with our prediction, internalized homophobia related to greater distress. Contrary to our prediction, disclosure did not relate to lower distress. Path models were consistent with the position that internalized homophobia promotes distress through lower self-esteem and perceived unavailability of social support. However, the data were also consistent with a model in which low self-esteem leads to internalized homophobia by way of elevated distress. Internalized homophobia also related inversely to utilization of health care resources. Our discussion centers on the need for more information regarding this understudied population. 相似文献
144.
Current research on face processing in primates has focused on a few species, mostly macaques and chimpanzees; to date, only
one New World monkey, the squirrel monkey, has been tested. We explored face processing, and the inversion effect in particular,
in a New World primate species, the cotton-top tamarin (Saguinus oedipus). In phase 1 of our study, we trained subjects to discriminate between two faces and two scrambled faces; we then presented
the tamarins with a series of novel probes in order to determine the features underlying classification. Results showed that
the tamarins relied on the external contour of the face for discrimination more than the internal features and their configuration.
Statistical analyses revealed no differences in accuracy or response times to upright versus inverted stimuli, and thus no
inversion effect. In phase 2, we provided subjects with additional training on the face versus scrambled face discrimination
task in order to focus their attention on the configuration of the internal features. Accuracy data revealed individual differences
in how tamarins classified these stimuli, even though each subject was trained in the same way. In phase 3, we tested for
generalization to a new set of face stimuli, as well as for the capacity to show an inversion effect. For one subject who
attended to the configuration of internal features, we found significant evidence of generalization, but no evidence for an
inversion effect.
Electronic Publication 相似文献
145.
Weiss DS 《Psychological bulletin》2007,133(3):529-32; author reply 533-4
Levin and Nielsen (2007) presented a review of research emphasizing dreams whose content is distressing. With some broad conclusions about factors important in the understanding of distressing dreams as a springboard, the authors offered potential explanatory mechanisms for distressing dreams that range from brain structures to personality variables, drawing heavily on findings about posttraumatic stress disorder. Though a reasonable case is made for elements of the argument, implications from one perspective are not always considered in making the argument for others, issues that follow logically from certain assertions are not discussed, and certain assumptions appear unjustified. Definitional or phenomenological presentations are not always consistent, making it difficult to determine the real nature of the variables being offered and to get a clear sense of the boundaries of the model. 相似文献
146.
This is a practical guide for the technologically unsophisticated behavioral researcher who wishes to use voice radio telemetry (RTel). Points discussed include how to determine suitability of RTel for a project, selection of consultants, suitable locales for RTel, costs, ethical/legal issues, and operating procedures. 相似文献
147.
148.
It was recommended by the 1983 National Working Conference on Education and Training in Health Psychology (Stone, 1983) that 2 years of postdoctoral education and training be mandated for future licensed health service providers in health psychology. The background for requiring this postdoctoral training, a model for education, criteria for developing programs, issues of funding, and a rationale for accepting this mandate are presented. Highlighted are the stable and consistent growth of health psychology, the need to expand the period of clinical training to meet the many advances in the field, and the challenges that exist for the fully trained clinical health service provider. 相似文献
149.
Katherine L. Dixon-Gordon Alexander L. Chapman Nicole H. Weiss M. Zachary Rosenthal 《Journal of psychopathology and behavioral assessment》2014,36(4):616-625
Impulsive, maladaptive, and potentially self-damaging behaviors are a hallmark feature of borderline personality (BP) pathology. Difficulties with emotion regulation have been implicated in both BP pathology and maladaptive behaviors. One facet of emotion regulation that may be particularly important in the relation between BP pathology and urges for maladaptive behaviors is emotion differentiation. Over 1 day, 84 participants high (n?=?34) and low (n?=?50) in BP pathology responded to questions regarding state emotions and urges to engage in maladaptive behaviors using handheld computers, in addition to a measure of emotion-related difficulties controlling impulsive behaviors. Results revealed that individuals high in BP pathology reported greater emotion-related impulsivity as well as daily urges to engage in maladaptive behaviors. However, the association between BP group and both baseline emotion-related impulsivity and daily urges for maladaptive behaviors was strongest among individuals who had low levels of positive emotion differentiation. Conversely, negative emotion differentiation did not significantly moderate the relationships between BP group and either emotion-related difficulties controlling impulsive behaviors or state urges for maladaptive behaviors. Limitations to the present study include the reliance upon an analogue sample and the relatively brief monitoring period. Despite limitations, these results suggest that, among individuals with high BP pathology, the ability to differentiate between positive emotions may be a particularly important target in the reduction of maladaptive behaviors. 相似文献
150.
Charlotte Johnston Margaret D. Weiss Candice Murray Natalie V. Miller 《Journal of abnormal child psychology》2014,42(3):479-488
Tested whether instructions for how to rate child attention-deficit/hyperactivity disorder (ADHD) symptoms would improve the agreement between mothers’ ratings of symptoms in their children and ratings provided by teachers and objective observers. Sixty-eight mothers of 5 to 12 year old children (53 boys and 15 girls) referred for ADHD assessment were randomly assigned to receive or not receive the instructions. Mothers and teachers rated the children on the SNAP-IV Rating Scale and objective observers rated the children’s behavior during structured tasks. Relations between mother and teacher, and mother and observer ratings were generally stronger for mothers in the Instruction group compared to mothers in the No Instruction group, in some cases significantly stronger. The instructional materials also improved mothers’ knowledge of how to rate ADHD symptoms and reduced some associations between mothers’ ratings and family socioeconomic status. These instructions have the potential to improve clinical assessments of child ADHD symptoms. 相似文献