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941.
Greenwald AG Greenwald AG 《Journal of experimental psychology. Human perception and performance》2004,30(3):632-636
Four publications have demonstrated perfect timesharing of 1 simultaneous decisions. In all of these, (a). subjects were motivated to respond as quickly as possible, and with 1 exception that involved unusually extensive practice (E. Hazeltine, D. Teague, & R. B. Ivry, 2002, Experiment 4), (b). at least 1 of the 2 tasks was characterized by ideomotor (IM) compatibility, meaning that each task stimulus incorporated a component of the sensory feedback from its required response. Conclusions justified by these reports are that (a). the use of speed-stress instructions is necessary for perfect timesharing of 2 simultaneous decision tasks: (b). when both tasks are IM compatible, perfect timesharing requires little or no practice: (c). extensive practice is needed to achieve perfect timesharing when only 1 of the 2 tasks is IM compatible: and (d). very large amounts of practice can yield perfect timesharing of 2 decision tasks when neither is IM compatible. 相似文献
942.
Briellmann RS Saling MM Connell AB Waites AB Abbott DF Jackson GD 《Brain and language》2004,89(3):136-542
We assessed six multilingual subjects by functional MRI using a Noun Verb Generation task in four different languages. We hypothesised that the degree of proficiency in each language would be related to the extent of functional activity measured in a region of interest analysis. Proficiency in each language was quantified using two neuropsychological tests. All four languages activated overlapping brain areas, corresponding to the major language regions. The number of activated voxels correlated with proficiency, so that the activated volume increased for languages in which a subject had poorer proficiency. Activation did not appear to be dependent on the age at which the language was learnt. 相似文献
943.
This article examines the issue of atypical antipsychotics, glucose/insulin, and other metabolic derangements (ie, metabolic syndrome), including a general introduction to the health concerns of our patients, a review of the literature, possible mechanisms of antipsychotic induced glucose dysregulation, monitoring approaches, and management and prevention of metabolic syndrome. Literature review leads to mechanism hypotheses and risk estimations, leading to guidelines for monitoring and treatment. The patient population suffers from a higher degree of baseline metabolic dysregulation resulting in cardiovascular disease through components of the metabolic syndrome, and this risk increases with administration of atypical antipsychotic medication at different rates, depending on both drug and patient risk factors. The growing knowledge of mechanisms behind drug induced glucose/insulin and other metabolic dysregulation, as well as advances in pharmacogenomics, will help refine drug selection and monitoring for adverse, life-threatening metabolic effects. 相似文献
944.
Self-esteem in body dysmorphic disorder 总被引:3,自引:0,他引:3
Although studies indicate that poor body image is associated with poor self-esteem, few investigations have examined self-esteem in a clinical sample of individuals with body dysmorphic disorder (BDD). The present study examined self-esteem in 93 BDD patients and change in self-esteem with pharmacotherapy. Subjects completed the Rosenberg Self-Esteem Scale (RSES) and were assessed with other measures. Participants in a placebo-controlled fluoxetine trial completed measures at baseline and endpoint. The mean RSES score was approximately 1.5 SD units lower than means reported for nonclinical samples. Although poorer self-esteem was associated with more severe BDD and depression, as well as greater delusionality, the relationship between self-esteem and BDD severity was largely mediated by depressive symptoms. Self-esteem did not improve significantly more with fluoxetine than placebo, although it improved significantly more in fluoxetine responders than in nonresponders. It is unclear whether poor self-esteem predisposes to BDD and/or is a consequence of the disorder. 相似文献
945.
This study sought to determine if overprediction of physical discomfort prior to and following exercise was related to a number of self-report and objective measures of physical health status in a general population sample. Cross-sectional findings indicated a significant and specific relation between patterns of discomfort overprediction (vs under- or accurate prediction) and negative self-reported health status and attitudes to exercise, lower levels of physical activity, as well as poorer scores for resting heart rate, cardiorespiratory fitness and body mass index (but not waist:hip ratio). Females were more likely to overpredict discomfort, were less active and had poorer physical health than males. The potential usefulness of the prediction match-mismatch paradigm for studying exercise-related appraisal processes as proximal determinants of physical activity are discussed. Information obtained from such studies could prove useful in public health education campaigns aimed at increasing levels of physical activity in the general population, particularly among the less active. 相似文献
946.
A unified theory of implicit attitudes, stereotypes, self-esteem, and self-concept 总被引:26,自引:0,他引:26
Greenwald AG Banaji MR Rudman LA Farnham SD Nosek BA Mellott DS 《Psychological review》2002,109(1):3-25
This theoretical integration of social psychology's main cognitive and affective constructs was shaped by 3 influences: (a) recent widespread interest in automatic and implicit cognition, (b) development of the Implicit Association Test (IAT; A. G. Greenwald, D. E. McGhee, & J. L. K. Schwartz. 1998), and (c) social psychology's consistency theories of the 1950s, especially F. Heider's (1958) balance theory. The balanced identity design is introduced as a method to test correlational predictions of the theory. Data obtained with this method revealed that predicted consistency patterns were strongly apparent in the data for implicit (IAT) measures but not in those for parallel explicit (self-report) measures. Two additional not-yet-tested predictions of the theory are described. 相似文献
947.
Semantic priming by visually masked, unidentifiable (“subliminal”) words occurs robustly when the words appearing as masked
primes have been classified earlier in practice as visible targets. It has been argued (Damian, 2001) that practice enables
robust subliminal priming by automatizing learned associations between words and the specific motor responses used to classify
them. Two experiments demonstrate that, instead, the associations formed in practice that underlie subliminal priming are
between words and semantic categories. Visible words classified aspleasant or unpleasant in practice with one set of response key assignments functioned later as subliminal primes with appropriate valence, even
when associations of keys with valences were reversed before the test. This result shows that subliminal priming involves
unconscious categorization of the prime, rather than just the automatic activation of a practiced stimulus-response mapping. 相似文献
948.
Using the implicit association test to measure age differences in implicit social cognitions 总被引:7,自引:0,他引:7
Two studies investigated the use of the Implicit Association Test (IAT; A. G. Greenwald, D. E. McGhee, & J. L. K. Schwartz, 1998) to study age differences in implicit social cognitions. Study I collected IAT (implicit) and explicit (self-report) measures of age attitudes, age identity, and self-esteem from young, young-old, and old-old participants. Study 2 collected IAT and explicit measures of attitudes toward flowers versus insects from young and old participants. Results show that the IAT provided theoretically meaningful insights into age differences in social cognitions that the explicit measures did not, supporting the value of the IAT in aging research. Results also illustrate that age-related slowing must be considered in analysis and interpretation of IAT measures. 相似文献
949.
950.
Extrinsic value orientation and "the tragedy of the commons" 总被引:3,自引:0,他引:3
Two studies examined the effect of Extrinsic Value Orientation (Kasser & Ryan, 1993, 1996) upon harvesting strategies and personal profit within commons dilemmas, in which individual and group interests can be at odds. At an individual or within-group level of analysis, extrinsically oriented persons (who value money, fame, and popularity) harvested more than intrinsically oriented persons (who value self-acceptance, intimacy, and community). However, a counteracting group-level effect was found such that groups with a greater number of extrinsic members harvested less on average than did groups with more intrinsic members, because their commons did not last as long. As a result, even excessive harvesters within extrinsic groups did no better than did self-restrained harvesters within intrinsic groups. Supplementary analyses indicate that extrinsic values are associated with acquisitiveness regarding resources, more so than apprehension regarding others' acquisitiveness. 相似文献