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331.
The effects of preparatory weak muscular contraction (pre-tension) have been investigated in a number of previous studies using tasks with either simple or choice responses to measure the reaction time (RT). These studies suggested that optimal pre-tension performed prior to a motor response tends to shorten the RTs. Using a simple RT task in which participants performed a grip response to a visual stimulus, the present study compared the RTs between two pre-tension conditions (self-selection and constraint) to investigate the effects of different instructions for pre-tension. Under the self-selection condition, participants were asked to determine their optimal pre-tension levels while attempting to give responses as fast as possible. Under the constraint condition, the participants developed a pre-tension at a target force determined by the experimenter. The target force was set at the same level as the pre-tension level maintained under the self-selection. Despite the fact that the pre-tension level manipulated was the same for both conditions, the RTs were significantly shorter under self-selection than under constraint. Moreover, the present study showed a positive correlation coefficient between the proportion of shortening in RT and the variation of pre-tension level. This indicated a performance trade-off between the stability of pre-tension and RTs. The result suggests that shorter RTs that occur under self-selection are primarily mediated by mental factors, such as attention allocation, rather than by the effects of peripheral muscular preparation. 相似文献
332.
In the leading model of face perception, facial identity and facial expressions of emotion are recognized by separate mechanisms. In this report, we provide evidence supporting the independence of these processes by documenting an individual with severely impaired recognition of facial identity yet normal recognition of facial expressions of emotion. NM, a 40-year-old prosopagnosic, showed severely impaired performance on five of six tests of facial identity recognition. In contrast, she performed in the normal range on four different tests of emotion recognition. Because the tests of identity recognition and emotion recognition assessed her abilities in a variety of ways, these results provide solid support for models in which identity recognition and emotion recognition are performed by separate processes. 相似文献
333.
When transient attention is summoned by the sudden appearance of a large cue, it can be deployed to a small portion of the cue where a target appeared on previous trials (Kristjánsson, Mackeben, & Nakayama, 2001). This result runs counter to the view that transient, or exogenous, attention is summoned automatically and indiscriminately to abruptly appearing stimuli. To further characterize the short-term learning mediating this phenomenon, we report the following results. (1) When there was a consistent relationship between a small identifying portion of the cue and the target, learning occurred rapidly. Thus, transient attention can be summoned to a distinctively colored or distinctively shaped portion of the cue as a consequence of repeated pairing (Experiments 1 and 2). (2) When there was a consistent relation between a given position on the object and its overall color or shape, no learning occurred (Experiments 3 and 4). Thus, transient attention cannot learn a complex relation between target position and shape or color. (3) We confirmed the fast object-centered learning of position shown in Kristjánsson et al. (2001). (4) Explicit knowledge of the cue-target relationship had no effect on the performance of the task. The results provide evidence for the existence of a primitive object-centered learning mechanism beneficial for the rapid deployment of transient attention. The possible role of such a mechanism in the maintenance of representations of the visual environment is discussed. 相似文献
334.
Average faces are attractive, but what is average depends on experience. We examined the effect of brief exposure to consistent facial distortions on what looks normal (average) and what looks attractive. Adaptation to a consistent distortion shifted what looked most normal, and what looked most attractive, toward that distortion. These normality and attractiveness aftereffects occurred when the adapting and test faces differed in orientation by 90° (+45° vs. −45°), suggesting adaptation of high-level neurons whose coding is not strictly retino- topic. Our results suggest that perceptual adaptation can rapidly recalibrate people's preferences to fit the faces they see. The results also suggest that average faces are attractive because of their central location in a distribution of faces (i.e., prototypicality), rather than because of any intrinsic appeal of particular physical characteristics. Recalibration of preferences may have important consequences, given the powerful effects of perceived attractiveness on person perception, mate choice, social interactions, and social outcomes for individuals. 相似文献
335.
Loeber R Drinkwater M Yin Y Anderson SJ Schmidt LC Crawford A 《Journal of abnormal child psychology》2000,28(4):353-369
Research has demonstrated the stability of juvenile offending during childhood and adolescence but generally has not focused on the continuity of family interactions associated with juvenile offending. The present report focused on the stability of several family interaction events and attributes (i.e., physical punishment, communication, supervision, positive parenting, and parent–child relationship) for a large sample of male adolescents and their primary caretakers, drawn from a multiyear longitudinal study that represented middle childhood through late adolescence (ages 6–18). We also assessed the impact of ethnicity, family composition, teenage motherhood, and youth delinquency on these interactions. Test–retest correlations and growth-curve analyses were used to assess relative and absolute stability of the interactions, respectively. As predicted, relative stability of family interaction was high. There was an absolute change in scores of physical punishment (decreased) compared to poor supervision and low positive parenting (both increased), whereas poor communication and bad relationship with the caretaker did not measurably change with age. Single-parent families and families with teenage mothers experienced significantly worse interactions over time than did families consisting of two biological parents present in the household. These findings are discussed in relation to the development of juvenile offending. 相似文献
336.
Sampo V. Paunonen Ken Ewan Jillian Earthy Sarah Lefave & Heather Goldberg 《Journal of personality》1999,67(3):555-583
Two studies examined the effects of the appearance of specific facial features on attributions of personality. In Study 1, photographs of men and women were computer-manipulated to have larger than average or smaller than average eye size, and wider than average or narrower than average eye spacing. In Study 2, eye size and mouth fullness were similarly altered. Although it was found that neither eye spacing nor mouth fullness had any effect on perceptions of the targets' personality or physical characteristics, eye size had strong effects in both studies. Analyses of covariance revealed that the personality trait ratings that varied with eye size were mediated primarily by perceived differences in the targets' masculinity-femininity and babyfacedness, and to a lesser extent by attractiveness. 相似文献
337.
Negative priming effects that are bigger than a breadbox: Attention to distractors does not eliminate negative priming, it enhances it 总被引:3,自引:0,他引:3
In a series of experiments, we examined the effect of requiring subjects to attend to distractors in a test of negative priming. This was accomplished by using a referent size-selection task in which subjects were instructed to name the larger animal and to ignore the smaller animal in a word pair. The result was a quadrupling of the standard negative priming effect, suggesting that negative priming not only occurs for attended distractors, it is actually enhanced. We demonstrated that this enhancement of the effect was not due solely to increased latencies in the referent size-selection task, because neither decreasing base response times in other referent size-selection tasks nor increasing base response times in typical color-selection tasks substantially affected the respective negative priming effects. Although these findings can be accommodated within current theories of negative priming, they challenge the basic assumption that the negative priming effect arises because the critical item was ignored or not attended to on the prime trial. 相似文献
338.
Two groups of college students (40 and 56) gave what they felt to be the literal and figurative interpretation of 30 different idiomatic expressions and rated their interpretations for frequency of use and for familiarity. Ratings were done on 7-point scales where 1=never and 7=very often. Subjects gave higher ratings to figurative interpretations than to literal interpretations and higher ratings of frequency than familiarity. Nevertheless, there was a high correlation between ratings of frequency and familiarity. It was also found that figurative ratings were independent of literal ratings. In the main, figurative ratings were found to be high (5–7) irrespective of their literal ratings. A small subgroup of idioms, however, had relatively low ratings on both scales. The differences noted between idioms may help to account for certain discrepancies that have appeared in recent experimental studies on idiom processing. 相似文献
339.
Serge Piccinin Michael McCarrey Ken Welburn Lise Chislett Guy Bourgon Janine Scott 《Current Psychology》1990,9(4):385-395
Seventy-four university undergraduates (40.2% male and 59.8% female) reporting difficulty in giving and receiving criticism
were randomly assigned to either a training group consisting of cognitive behavioral criticism skills including behavior rehearsal,
modeling, coaching, cognitive restructuring, or to a control group. Dependent measures were given at pre-test, post-test,
and one year follow-up. Included were self-report measures consisting of Fear of Negative Evaluation (FNE), Criticism Concerns
Scale (CCS), Criticism Self-Esteem Giving and Receiving Scales, and behavioral role-play measures consisting of judges’ global
ratings of subject’s verbal and nonverbal criticism behaviors in role-play scenarios with a live actor. Results for the self-report
measures, FNE, and Criticism Self-Esteem Receiving showed both training program and control groups improved at post-test,
but only the training program group maintained gains at one year follow-up. For the CCS and Criticism Self-Esteem Giving,
the training program group improved over time, yet was only significantly different from control group at post-test. Results
were discussed in terms of the pro-active nature of giving criticism versus the more reactive nature of receiving criticism. 相似文献
340.
Ken Warmbrōd 《Synthese》1989,79(2):201-230
It is argued thatde dicto andde re beliefs are attitudes towards syntactically structured entities (sentences) in the head. In order to identify the content of ade dicto orde re belief, we must be able to match causal relations of belief states to natural language inferences. Such match-ups provide sufficient empirical justification for regarding those causal relations as syntactic transformations, that is, inferences. But only syntactically structured entities are capable of enjoying such inferential relations. Hence,de dicto andde re beliefs must be syntactically structured. Given that beliefs are also brain states, it follows that they are sentences in the brain. The argument presented here is shown to be an improvement over similar arguments advanced by Harman and Fodor.Thanks to George Schlesinger, Ann MacKenzie, Vic Tennant and an anonymous referee forSynthese for helpful comments on an earlier draft of this paper. 相似文献