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311.
To test the hypothesis that higher scores on alexithymia are associated with reduced tolerance for cold pressor pain, 116 college undergraduates completed the Toronto Alexithymia Scale-20 of Bagby, Parker and Taylor and engaged in the cold pressor test. Their alexithymia scores were not associated with tolerance for cold pressor pain, suggesting that individuals scoring high on alexithymia do not show a general hypersensitivity to a cold stimulus. 相似文献
312.
Four observers completed identification and categorization tasks. Learning and attention processes were examined by applying general recognition theory (F. G. Ashby & J. T. Townsend, 1986), which separates perceptual, decisional, and attentional processes. Learning led to decision regions that became more nearly optimal. Learning had little effect on perceptual processes in identification and decisional integration categorization tasks but affected perceptual processes in decisional selective attention categorization tasks, leading to perceptual selective attention. These findings suggest that (a) identification and categorization invoke decision strategies that are localized in the striatum (F. G. Ashby, E. M. Waldron, W. W. Lee, & A. Berkman, 2001) and (b) perceptual and decisional attention systems exist and are mediated by distinct brain structures (M. I. Posner & S. E. Petersen, 1990). 相似文献
313.
Gray JR Burgess GC Schaefer A Yarkoni T Larsen RJ Braver TS 《Cognitive, affective & behavioral neuroscience》2005,5(2):182-190
To test for a relation between individual differences in personality and neural-processing efficiency, we used functional
magnetic resonance imaging (fMRI) to assess brain activity within regions associated with cognitive control during a demanding
working memory task. Fifty-three participants completed both the self-report behavioral inhibition sensitivity (BIS) and behavioral
approach sensitivity (BAS) personality scales and a standard measure of fluid intelligence (Raven’s Advanced Progressive Matrices).
They were then scanned as they performed a three-back working memory task. A mixed blocked/ event-related fMRI design enabled
us to identify both sustained and transient neural activity. Higher BAS was negatively related to event-related activity in
the dorsal anterior cingulate, the lateral prefrontal cortex, and parietal areas in regions of interest identified in previous
work. These relationships were not explained by differences in either behavioral performance or fluid intelligence, consistent
with greater neural efficiency. The results reveal the high specificity of the relationships among personality, cognition,
and brain activity. The data confirm that affective dimensions of personality are independent of intelligence, yet also suggest
that they might be interrelated in subtle ways, because they modulate activity in overlapping brain regions that appear to
be critical for task performance. 相似文献
314.
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316.
On the Affine Structure of Perceptual Space 总被引:3,自引:0,他引:3
James T. Todd Augustinus H.J. Oomes Jan J. Koenderink & Astrid M.L. Kappers 《Psychological science》2001,12(3):191-196
Affine geometry is a generalization of Euclidean geometry in which distance can be scaled along parallel directions, though relative distances in different directions may be incommensurable. This article presents a new procedure for testing the intrinsic affine structure of a psychological space by having subjects perform bisection judgments over multiple directions. If those judgments are internally consistent with one another, they must satisfy a theorem first proved by Pierre Varignon around 300 years ago. In the experiment reported here, this procedure was employed to measure the perceived structure of a visual ground surface. The results revealed that observers' judgments were systematically distorted relative to the physical environment, but that the judged bisections in different directions had an internally consistent affine structure. Implications of these findings for other possible response tasks are considered. 相似文献
317.
318.
Todd K. Shackelford 《Aggressive behavior》2001,27(4):284-291
Using a national‐level US homicide database that includes more than 400,000 homicides committed from 1976‐1994, I calculated rates of uxoricide (the murder of a woman by her romantic partner) by type of relationship (cohabiting or marital), ages of the partners, and age difference between partners. Women in cohabiting relationships are about nine times more likely to be killed by their partner than are women in marital relationships. Within marital relationships, the risk of uxoricide decreases with a woman’s age. Within cohabiting relationships, in contrast, middle‐aged women are at greatest risk of uxoricide. Paralleling the uxoricide victimization rates, uxoricide perpetration rates are highest for young married men and for middle‐aged cohabiting men. Uxoricide risk generally increases with greater age difference between partners. These findings provide the first national‐level replication of uxoricide risk patterns reported for a national‐level Canadian sample. Discussion highlights future research directions, including identifying why women in cohabiting relationships incur greater risk of uxoricide than do women in marital relationships. Aggr. Behav. 27:284–291, 2001. © 2001 Wiley‐Liss, Inc. 相似文献
319.
Todd L. McKerchar SungWoo Kahng Elyse Casioppo David Wilson 《Behavioral Interventions》2001,16(1):59-63
Two functional analyses for self‐injurious behavior (SIB) exhibited by a child diagnosed with mental retardation and autism were conducted. Responding was high and undifferentiated in the first functional analysis, indicating that SIB was maintained by automatic reinforcement. During the second functional analysis, the client wore a padded helmet and all SIB was blocked. SIB decreased in all conditions except attention, suggesting that SIB was multiply controlled (social positive and automatic reinforcement). Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
320.
In three experiments, we evaluated potential sources of familiarity in the production of feature and conjunction errors with both word (Experiments 1 and 3) and nonword (Experiment 2) stimuli and related this work to various dual-process models of memory. The contributions of letter, syllable, lexical morpheme, and conceptual information were considered. Lexical morpheme information was consistently more potent than syllable information in leading to feature and conjunction errors across Experiments 1 and 2, and a word length explanation did not account for this consistent finding. In addition, there was no impact of conceptual information on these errors (Experiments 1-3). The results support a familiarity-based interpretation of feature and conjunction errors and a lexical morpheme basis for the familiarity in compound words. In order to be more comprehensive, memory models may need to account for a lexical morpheme source of familiarity. 相似文献