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51.
Stefanie Kehrer Antje Kraft Kerstin Irlbacher Stefan P. Koch Herbert Hagendorf Norbert Kathmann Stephan A. Brandt 《Psychological research》2009,73(6):751-761
Event-related potentials were measured to investigate the role of visual spatial attention mechanisms in conflict processing.
We suggested that a more difficult target selection leads to stronger attentional top-down control, thereby reducing the effects
of arising conflicts. This hypothesis was tested by varying the selection difficulty in a location negative priming (NP) paradigm.
The difficult task resulted in prolonged responses as compared to the easy task. A behavioral NP effect was only evident in
the easy task. Psychophysiologically the easy task was associated with reduced parietal N1, enhanced frontocentral N2 and
N2pc components and a prolonged P3 latency for the conflict as compared to the control condition. The N2pc effect was also
obvious in the difficult task. Additionally frontocentral N2 amplitudes increased and latencies of N2pc and P3 were delayed
compared to the easy task. The differences at frontocentral and parietal electrodes are consistent with previous studies ascribing
activity in the prefrontal and parietal cortex as the source of top-down attentional control. Thus, we propose that stronger
cognitive control is involved in the difficult task, resulting in a reduced behavioral NP conflict. 相似文献
52.
Nyla R. Branscombe Michael T. Schmitt Kristin Schiffhauer 《European journal of social psychology》2007,37(2):203-215
Thinking about the benefits gained from a privileged group membership can threaten social identity and evoke justification of the existing status difference between the ingroup and a disadvantaged group. For White Americans, racial privilege may be justified by concurring with modern racist attitudes. In Experiment 1, White Americans randomly assigned to think about White privilege expressed greater modern racism compared to those assigned to think about White disadvantage or a race‐irrelevant topic. In Experiment 2, we found that increased racism in response to thoughts of White privilege was limited to those who highly identified with their racial category. In contrast, when White racial identification was sufficiently low, thoughts of White privilege reliably reduced modern racism. We discuss the implications of these findings for the meaning of modern racism and prejudice reduction. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
53.
Both social dominance orientation (SDO) and right‐wing authoritarianism (RWA) are assumed to be general and relatively stable psychological orientations that individuals ‘carry with them’ from context to context, influencing responses to salient forms of intergroup inequality and domination. In two experimental studies we tested the relative stability of SDO (Studies 1 and 2) and RWA (Study 1). That is, we examined whether people who score relatively high on SDO/RWA in one context tend to support intergroup hierarchy and domination in other contexts. To do so, we manipulated the salience of different intergroup relationships before measuring SDO and RWA, and then observed the associations among these constructs and attitudes toward specific intergroup relationships and legitimizing ideologies (support for war, conservatism, heterosexism, and religious fundamentalism). Contrary to the assumption of relative stability, the extent to which SDO and RWA were related to these specific attitudes and ideologies varied markedly depending on the experimental context. These results highlight the contextual basis and meaning of individuals' expressed support for group‐based dominance. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
54.
Earlier research has established that speakers usually fixate the objects they name and that the viewing time for an object depends on the time necessary for object recognition and for the retrieval of its name. In three experiments, speakers produced pronouns and noun phrases to refer to new objects and to objects already known. Speakers looked less frequently and for shorter periods at the objects to be named when they had very recently seen or heard of these objects than when the objects were new. Looking rates were higher and viewing times longer in preparation of noun phrases than in preparation of pronouns. If it is assumed that there is a close relationship between eye gaze and visual attention, these results reveal (1) that speakers allocate less visual attention to given objects than to new ones and (2) that they allocate visual attention both less often and for shorter periods to objects they will refer to by a pronoun than to objects they will name in a full noun phrase. The experiments suggest that linguistic processing benefits, directly or indirectly, from allocation of visual attention to the referent object. 相似文献
55.
The authors explored the psychology of romantically attracting someone who is already in a relationship--what can be called the process of human mate poaching. In Study 1 (N = 236), they found that attempts at poaching were relatively common and were linked with distinctive personality dispositions. Study 2 (N = 220) documented that the perceived costs and benefits of poaching differed somewhat for men and women and depended on whether short-term or long-term poaching outcomes were targeted. Study 3 (N = 453) found support for 5 evolution-based hypotheses about the perceived effectiveness of poaching tactics. Study 4 (N = 333) found that poaching effectiveness was influenced by the type of relationship being encroached on-marital, dating, long distance, highly committed, just beginning, or about to end. Discussion focuses on the importance of placing mate poaching within the broader context of human sexual strategies. 相似文献
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The relation between sex role self-concept (masculine, feminine, undifferentiated, and androgynous) and both relationship quality and dysfunctional relationship beliefs was examined in 370 monogamous partners who represented four types of couples (married, heterosexual cohabiting, gay, and lesbian). Analyses used both the individual partner and the couple as the unit of analysis. The individual partner analyses revealed that relationship quality and relationship beliefs differed by subjects' sex role self-concept. Androgynous and feminine subjects reported higher relationship quality than masculine and undifferentiated subjects; androgynous subjects had fewer "disagreement is destructive" beliefs than feminine subjects; and androgynous subjects had fewer "partner cannot change" beliefs than undifferentiated subjects. The couple analyses revealed a relation between partners' sex role self-concept only for the heterosexual cohabiting couples. For these couples, masculine men tended to pair with feminine or undifferentiated women, and androgynous partners tended to pair together. Relative to other couples, couples in which one or both partners were androgynous or feminine reported the highest relationship quality, whereas couples in which one or both partners were undifferentiated or masculine reported the lowest relationship quality. These effects did not vary by type of couple. The study concluded that sex role self-concept is a robust factor in appraisals of relationship quality. Relative to masculine and undifferentiated individuals, androgynous and feminine individuals report greater positive relationship functioning. 相似文献
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Effects of reinforcement rate and reinforcer magnitude on choice behavior of humans 总被引:3,自引:3,他引:0 下载免费PDF全文
Schmitt DR 《Journal of the experimental analysis of behavior》1974,21(3):409-419
Two experiments with human subjects investigated the effects of rate of reinforcement and reinforcer magnitude upon choice. In Experiment 1, each of five subjects responded on four concurrent variable-interval schedules. In contrast to previous studies using non-human organisms, relative response rate did not closely match relative rate of reinforcement. Discrepancies ranged from 0.03 to 0.43 (mean equal to 0.19). Similar discrepancies were found between relative amount of time spent responding on each schedule and the corresponding relative rates of reinforcement. In Experiment 2, in which reinforcer magnitude was varied for each of five subjects, similar discrepancies ranging from 0.05 to 0.50 (mean equal to 0.21), were found between relative response rate and relative proportion of reinforcers received. In both experiments, changeover rates were lower on the long-interval concurrent schedules than on the short-interval ones. The results suggest that simple application of previous generalizations regarding the effects of reinforcement rate and reinforcer magnitude on choice for variable-interval schedules does not accurately describe human behavior in a simple laboratory situation. 相似文献