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This study investigated how early experience with racial discrimination affected the subsequent risky sexual behaviors of a diverse sample of African American youths (N = 745). The analyses focused on 3 risk-promoting factors thought to mediate the hypothesized discrimination → risky sex relation: negative affect, affiliation with deviant peers, and favorable attitudes toward risky sex. In addition, attentive parenting was examined as a protective factor. Analyses using structural equation modeling revealed that youths who perceived more racial discrimination at age 10 or 11 were engaging in more sexual risk taking at age 18 or 19. This relation was mediated by the hypothesized risk-promoting factors via pathways that were consistent with our conceptual model. Results also indicated a prospective reciprocal relation between parenting and children's deviant affiliations: deviant peer affiliations at age 10 or 11 predicted more attentive parenting behaviors by the parents; this response from the parents, in turn, predicted relatively fewer deviant affiliations when the youths were 15 or 16. Study findings are discussed in terms of their relevance to the disproportionately high rates of sexually transmitted infections among African Americans.  相似文献   

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The distinction between underlying and superficial linguistic structure is a staple of modern cognitive psychology. Despite increasingly diverse conceptions of syntactic relations in linguistic theory, the received view in psycholinguistics has remained one in which the entities assigned to underlying relations may assume different surface relations. The present article examines this view in the context of language production and reviews evidence that the disposition to bind animate entities to the surface subject relation is a basic feature of language use, suggesting that mappings from conceptual categories to syntactic relations form a main support of the bridge from conception to language. Proceeding on this assumption, the article also evaluates competing accounts of the mapping process in production. The results argue against syntactic relation-changing operations, but favor a division between meaning- and form-related mechanisms.  相似文献   

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人类无意识模仿是指人们在社会交流时会相互无意识地模仿对方的一些动作、表情和行为方式。其在个体社会认知以及人际交流上扮演着重要的角色。通过回顾近十年来人类无意识模仿的各个领域内的研究进展, 以及分析无意识模仿的行为学效应, 脑神经机制以及病理学调控, 可以得出如下结论:所有神经层面以及行为层面的人类无意识模仿现象都是社会交流的产物。该观点在澄清无意识模仿神经机制以及促进幼儿社会认知发展方面具有一定启示意义, 而探索孤独症患者无意识模仿障碍的病理机制有望为该领域的未来研究开启新的方向。  相似文献   

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A series of four experiments investigated college students’ judgments of interevent contingency. Subjects were asked to judge the effect of a discrete response Itapping a wire) on the occurrence of a brief outcome (a radio’s buzzing). Pairings of the possible event-state combinations (response-outcome, response-no outcome, no response-outcome, no response-no outcome) were presented in a summary-table (Experiments 2 and 4), in an unbroken-time-line (Experimente 1, 2, and 4), or in a broken-time-line format (Experiment 3). Subjects judged the extent to which the response caused the outcome or prevented it from occurring. Across all methods of information presentation, judgments were a positive function of response-outcome contingency and outcome probability. In the unbroken-time-line condition, judgments of negative response-outcome contingencies were less extreme than judgments of equivalent positive contingencies. This asymmetry was smaller in the broken-time-line condition and in those conditions in which subjects were encouraged to segment an unbroken time line into discrete response outcome units. Finally, judgments of positive and negative relationships were generally symmetrical in the summary-table condition. Relative to the two time-line portrayals, summary table judgments were also less influenced by the overall probability of outcome occurrence. These judgment differences among format conditions suggest that, depending on the method of information presentation, subjects differently partition event sequences into discrete event pairings.  相似文献   

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In this article, I explore two attitudes towards war present among Buddhists in contemporary Sri Lanka: support for an all‐out military victory over the Liberation Tigers of Tamil Eelam (LTTE) and support for a ceasefire followed by a negotiated settlement. After a phenomenological presentation of the two approaches, I turn to the factors that have conditioned them. I argue that canonical narrative is drawn on both to support the war and to reject it and then look at more recent colonial history to provide further data, particularly to the dynamic undergirding Buddhist support for war. In the nineteenth century, under British rule, one significant ‘other’ for Sri Lankan Buddhists was the Christian. A pattern of spirited defence developed in the face of what was seen as humiliation and betrayal at the hands of Christians. This pattern, the paper suggests, can throw light on responses in the present to the very different ‘other’, the LITE.  相似文献   

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Being able to exploit features of the human face to predict health and fitness can serve as an evolutionary advantage. Surface features such as facial symmetry, averageness, and skin colour are known to influence attractiveness. We sought to determine whether observers are able to extract more complex features, namely body weight. If possible, it could be used as a predictor for health and fitness. For instance, facial adiposity could be taken to indicate a cardiovascular challenge or proneness to infections. Observers seem to be able to glean body weight information from frontal views of a face. Is weight estimation robust across different viewing angles? We showed that participants strongly overestimated body weight for faces photographed from a lower vantage point while underestimating it for faces photographed from a higher vantage point. The perspective distortions of simple facial measures (e.g., width-to-height ratio) that accompany changes in vantage point do not suffice to predict body weight. Instead, more complex patterns must be involved in the height-weight illusion.  相似文献   

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A. Tarski [22] proposed the study of infinitary consequence operations as the central topic of mathematical logic. He considered monotonicity to be a property of all such operations. In this paper, we weaken the monotonicity requirement and consider more general operations, inference operations. These operations describe the nonmonotonic logics both humans and machines seem to be using when infering defeasible information from incomplete knowledge. We single out a number of interesting families of inference operations. This study of infinitary inference operations is inspired by the results of [12] on nonmonotonic inference relations, and relies on some of the definitions found there.This work was partially supported by a grant from the Basic Research Foundation, Israel Academy of Sciences and Humanities and by the Jean and Helene Alfassa fund for research in Artificial Intelligence. Its final write-up was performed while the second author visited the Laboratoire d'Informatique Théorique et de Programmation, Université Paris 6.Presented byDov M. Gabbay  相似文献   

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An experiment was performed to assess the role of expectations in psychosocial contrast effects. Subjects were initially presented with a series of word definitions that were either high or low pathology; their task was to indicate those definitions that had been produced by schizophrenic (vs nonschizophrenic) patients. After this “induction” series, subjects were presented with a common “test” series that included both definitions and handwriting samples; they evaluated the degree of psychopathology that was implied by each item. Some subjects were required to state their expectations in connection with the test items. First they attempted to guess the percentage of schizophrenics in the overall test series; second, before being presented with each test item, they guessed whether the patient in question was (or was not) schizophrenic. Subjects' expectations were consistent with the induction series to which they were assigned; those assigned to the high-pathology induction expected the test series to include more schizophrenic patients than those in the low-pathology group. Nonetheless, despite these expectations, subjects showed a contrast effect in their evaluations of the test definitions (but not in evaluating the handwriting samples). That is, subjects from the low-pathology induction group rated the test definitions as being more pathological than did those in the high-pathology condition. Within-group correlations indicated that the subjects' expectations were directly related to subsequent judgments. A two-path model is discussed, relating (a) the respondents' induction group assignment, (b) his/her expectations, and (c) subsequent test judgments.  相似文献   

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This article addresses the learnability of auditory icons, that is, environmental sounds that refer either directly or indirectly to meaningful events. Direct relations use the sound made by the target event whereas indirect relations substitute a surrogate for the target. Across 3 experiments, different indirect relations (ecological, in which target and surrogate coexist in the world; metaphorical, in which target and surrogate have similar appearance or function, and random) were compared with one another and with direct relations on measures including associative strength ratings, amount of exposure required for learning, and response times for recognizing icons. Findings suggest that performance is best with direct relations, worst with random relations, and that ecological and metaphorical relations involve distinct types of association but do not differ in learnability.  相似文献   

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Eighty-three two-parent families were recruited via eight pre-school programmes in order to explore the origins of internalizing behaviour problems of pre-school children. Children were assessed by their teachers using standard checklists of anxious and prosocial behaviour as well as rank orders of dependency and social competence. Observers contributed measures of solitary activity and interactive play. In the home, mothers and fathers completed a 100-item Q-sort on parent-child attachment. Internalizing and competence measures were predictable from parent-child relations. Mother-child variables were more generally and significantly related to pre-school measures than father-child variables. In particular, boys who were highly dependent on their mothers were anxious and withdrawn in the pre-school, overly dependent on their teachers, and low in teacher assessments of prosocial behaviour and social competence. In addition to quantitative differences in the predictive power of maternal and paternal variables, qualitative differences were found indicating secure base behaviour as a more important dimension of mother-child relations, while affective sharing during play may be a more salient marker of the quality of father-child relations.  相似文献   

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International relations theory took shape in the 1950s in reaction to the behavioral social science movement, emphasizing the limits of rationality in a context of high uncertainty, weak rules, and the possibility of lethal conflict. Yet the same discipline rapidly developed "rational choice" models applied to foreign policy decision making or nuclear strategy. This paper argues that this transformation took place almost seamlessly around the concept of "decision." Initially associated with an antirationalist or "decisionist" approach to politics, the sovereign decision became the epitome of political rationality when it was redescribed as "rational choice," thus easing the cultural acceptance of political realism in the postwar years.  相似文献   

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This research delineates several factors that may affect how likely observers are to view intergroup aggression as justified. Subjects who favored one side or the other, as well as nominally neutral subjects, rated fictional scenarios depicting an aggressive action by either Israeli or Palestinian armed forces. As hypothesized, rated justification varied with the interaction of an observer's perspective and the relative power of the aggressor and the target, and with the interaction of perspective and the outcome of an action. Also as predicted, power and outcome were found to have no effects on judgments for observers having a neutral perspective. Based on these findings, the extent to which intergroup aggression is perceived as justified is explained in terms of motivational biases theorized to maintain positive social identity.  相似文献   

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In the present study, the gating paradigm was used to measure how much perceptual information that was extracted from musical excerpts needs to be heard to provide judgments of familiarity and of emotionality. Nonmusicians heard segments of increasing duration (250, 500, 1,000 msec, etc.). The stimuli were segments from familiar and unfamiliar musical excerpts in Experiment 1 and from very moving and emotionally neutral musical excerpts in Experiment 2. Participants judged how familiar (Experiment 1) or how moving (Experiment 2) the excerpt was to them. Results show that a feeling of familiarity can be triggered by 500-msec segments, and that the distinction between moving and neutral can be made for 250-msec segments. This finding extends the observation of fast-acting cognitive and emotional processes from face and voice perception to music perception.  相似文献   

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The capacity of the infant to bear affect relies on the capacity of the caregiver until it has achieved enough strength to perform this task itself. In the case of neglect the necessary strength to contain, metabolize and think about affect so that it may be converted into differentiated feelings cannot develop because of the absence of a caregiver capable of sustaining the infant in its emotional development. Instead a system of defence against affect arises in which the affect itself is perceived as intrusive and abusive. Because of neglect a confusion between abuse and affect is to be observed, with catastrophic consequences for the growing up child. Furthermore neglected children can be seduced by external abuse in the hope of being protected from affect that threatens to feel abusive from within. Paradoxically these children are drawn toward abusive situations in the hope of finding some ongoing shelter from unmanageable affect. A corollary of this is that actual containment comes to feel abusive to them: if they are made to feel affect, they perceive the other, who put them in touch with affect, as abusive: thus affect, abuse and containment are confused. Clinical material will support this thesis.  相似文献   

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