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121.
Mel Slater David-Paul Pertaub Chris Barker David M Clark 《Cyberpsychology & behavior》2006,9(5):627-633
This paper examines a necessary condition for successful exploitation of a virtual environment (VE) in therapeutic intervention for fear of public speaking. The condition is that clients experience a degree of anxiety in the VE that is similar to what they would have been expected to experience in a similar real world setting. We refer to this as a "presence" response. The experimental study involved 20 people who were confident public speakers and 16 who were phobic, assessed on a standard psychological scale. Half of each group spoke within a VE depicting an empty seminar room, and the other half within the same room but populated by a neutrally behaving virtual audience of five people. Three responses were measured--a questionnaire-based measure of anxiety, a measure of self-focused attention on somatic responses, and actual heart rate. On all responses, the people with phobia showed a significant increase in signs of anxiety when speaking to the virtual audience compared to the empty room, whereas the confident people did not. The result was strong in spite of the relatively low representational and behavioral fidelity of the virtual characters. 相似文献
122.
In this study, we investigated patients with focal neurodegenerative diseases to examine a formal linguistic distinction between classes of generalized quantifiers, like "some X" and "less than half of X." Our model of quantifier comprehension proposes that number knowledge is required to understand both first-order and higher-order quantifiers. The present results demonstrate that corticobasal degeneration (CBD) patients, who have number knowledge impairments but little evidence for a deficit understanding other aspects of language, are impaired in their comprehension of quantifiers relative to healthy seniors, Alzheimer's disease (AD) and frontotemporal dementia (FTD) patients [F(3,77)=4.98; p<.005]. Moreover, our model attempts to honor a distinction in complexity between classes of quantifiers such that working memory is required to comprehend higher-order quantifiers. Our results support this distinction by demonstrating that FTD and AD patients, who have working memory limitations, have greater difficulty understanding higher-order quantifiers relative to first-order quantifiers [F(1,77)=124.29; p<.001]. An important implication of these findings is that the meaning of generalized quantifiers appears to involve two dissociable components, number knowledge and working memory, which are supported by distinct brain regions. 相似文献
123.
Clark SE Abbe A Larson RP 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(6):1266-1273
S. E. Clark, A. Hori, A. Putnam, and T. J. Martin (2000) showed that collaboration on a recognition memory task produced facilitation in recognition of targets but had inconsistent and sometimes negative effects regarding distractors. They accounted for these results within the framework of a dual-process, recall-plus-familiarity model but showed only weak evidence to support it. The present results of 3 experiments present stronger evidence for Clark et al.'s dual-process view and also show why such evidence is difficult to obtain. 相似文献
124.
Heller MA Kennedy JM Clark A Mccarthy M Borgert A Wemple L Fulkerson E Kaffel N Duncan A Riddle T 《Perception》2006,35(10):1397-1420
In the first three experiments, subjects felt solid geometrical forms and matched raised-line pictures to the objects. Performance was best in experiment 1 for top views, with shorter response latencies than for side views, front views, or 3-D views with foreshortening. In a second experiment with blind participants, matching accuracy was not significantly affected by prior visual experience, but speed advantages were found for top views, with 3-D views also yielding better matching accuracy than side views. There were no performance advantages for pictures of objects with a constant cross section in the vertical axis. The early-blind participants had lower performance for side and frontal views. The objects were rotated to oblique orientations in experiment 3. Early-blind subjects performed worse than the other subjects given object rotation. Visual experience with pictures of objects at many angles could facilitate identification at oblique orientations. In experiment 5 with blindfolded sighted subjects, tangible pictures were used as targets and as choices. The results yielded superior overall performance for 3-D views (mean, M = 74% correct) and much lower matching accuracy for top views as targets (M = 58% correct). Performance was highest when the target and matching viewpoint were identical, but 3-D views (M = 96% correct) were still far better than top views. The accuracy advantage of the top views also disappeared when more complex objects were tested in experiment 6. Alternative theoretical implications of the results are discussed. 相似文献
125.
Monahan J Steadman HJ Appelbaum PS Grisso T Mulvey EP Roth LH Robbins PC Banks S Silver E 《Behavioral sciences & the law》2006,24(6):721-730
The Classification of Violence Risk (COVR) is an interactive software program designed to estimate the risk that a person hospitalized for mental disorder will be violent to others. The software leads the evaluator through a chart review and a brief interview with the patient. At the end of this interview, the software generates a report that contains a statistically valid estimate of the patient's violence risk-ranging from a 1% to a 76% likelihood of violence-including the confidence interval for that estimate, and a list of the risk factors that the program took into account to produce the estimate. In this article, the development of the COVR software is described and several issues that arise in its administration are discussed. 相似文献
126.
Younger and older African American and Caucasian American adults, who were matched by age (M age = 40.63 years), completed a survey on perceptions of aging and subjective age. The 2 groups did not differ in the age they considered someone to be old (M age = 74.5 years). However, when asked which age was the happiest age, African Americans chose a significantly younger age (M age = 18.26 years) than did Caucasian Americans (M age = 31.32 years), and this racial group difference interacted with age differences such that older Caucasian Americans named an older age than did younger Caucasian Americans. The authors found no such age difference for African Americans. When asked if old age was a happy time, 60% of Caucasian Americans answered yes, whereas only 2% of African Americans answered yes. These and other differences in images and concerns of old age and subjective age suggest a far more negative view of aging for African Americans and a need for changes in the provision of positive information about aging for this group. 相似文献
127.
128.
The authors hypothesize that people who fear dependence evidence a particular defensive bias by perceiving benefits received to have been less voluntarily given, which justifies not depending upon their partner. In Study 1, both members of married couples completed daily diaries regarding benefits they gave and received and the extent to which each was given involuntarily versus voluntarily. Avoidant attachment measured before marriage predicted perceiving one’s spouse to have given benefits less voluntarily, controlling for that spouse’s reports of how voluntarily benefits had been given. In Study 2, participants identified three specific benefits received from a friend. Days later, participants were primed with avoidant feelings or not before reporting the extent to which the benefits identified earlier had been given voluntarily. Participants primed to feel avoidant perceived their friend to have given them benefits less voluntarily than did the remaining participants. 相似文献
129.
ABSTRACT Dependency plays an important role in both normal and abnormal personality, but the construct remains loosely defined, both in clinical practice and the research literature. Moreover, although a number of measures purport to measure trait dependency, little agreement exists as to the structure of dependency within or across these instruments. Furthermore, what constitutes the low end of trait dependency remains unclear. Five hundred nine undergraduates completed a battery of 14 dependency scales and subscales, a subset of whom (n=322) also completed a broad measure of personality pathology (SNAP‐2). Exploratory factor analysis of the dependency measures yielded two correlated factors—Passive‐Submissive and Active‐Emotional dependency—as well as a third, unrelated factor, Detachment/Autonomy, all with differential correlates to the pathological personality traits of the SNAP‐2. Taken together, these data suggest a clear, 2‐factor model for trait dependency that is distinct from detachment/autonomy. 相似文献
130.