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51.
Pecoraro N Gomez F la Fleur S Roy M Dallman MF 《Neurobiology of learning and memory》2005,83(3):188-195
This study tested whether pre-training pairings of ingestion of a 32% sucrose solution and injection(s) of corticosterone (B) would enhance later ingestion in the absence of B, and whether these effects would carry over into later contrast-like effects when animals were subsequently shifted to 4% sucrose. Frequency-dependence of these pairings was also examined. Three groups of male Sprague-Dawley rats were adrenalectomized (ADX). A fourth group was sham ADX. Each ADX group received three presentations of sucrose and B (666 microg/kg, s.c.). One received unpaired presentations (separated by days), one received two unpaired presentations and one paired (i.e., simultaneous) presentation, and one received three paired presentations. Shams received three sucrose presentations paired with saline. Single, but not multiple pairings of B with ingestion of a 32% sucrose solution enhanced later sucrose ingestion, a memorial-like effect that carried over into later, opposite contrast-like effects upon presentation of a less-preferred 4% sucrose solution. These effects could not be easily ascribed to differences in training, other than the pairing regimen itself, nor to motivational differences at the time of testing, and were presumed to be memorial. The pairing and frequency-dependence of these appetitive phenomena are analogous to what is frequently observed during acute or chronic exposure to aversive situations and/or neuromodulatory stress hormones, in terms of their bidirectional effects on memory. Through effects on memory, stress hormones may modulate reward and reward relativity. 相似文献
52.
Systematic content analysis of personal documents is used to assess the course of personality development in one adolescent female exposed to traumatic historical and personal events, as well as more normative life changes. Seventy-one letters written by a young girl to her former teacher over a 9-year period comprise the data for this study. Our analyses assess the normal developmental processes of preoccupation with identity formation and the establishment of intimate relationships, as well as responses to life changes (emigration, marriage, pregnancy). Overall, results suggest that despite serious challenges and losses, this individual experienced normal personality development throughout her trying adolescence. In addition, particular life events affected the course of that development. Factors which may have facilitated her resilience are discussed. 相似文献
53.
Kumar Yogeeswaran Nilanjana Dasgupta Cristian Gomez 《European journal of social psychology》2012,42(6):691-705
Three experiments integrate research from political science and social psychology to examine the consequences of two competing visions of American national identity. American identity has been defined not only in terms of shared ethnocultural heritage originating in Europe (the ethnocultural prototype) but also in terms of shared commitment to civic service (the civic responsibility prototype). Three experiments tested the consequence of highlighting each of these national prototypes on perceivers' inclusion of ethnic minorities as legitimately American. Experiments 1–3 showed that highlighting ethnic minorities' allegiance to their ethnic subgroup (versus downplaying it) challenges the ethnocultural prototype and makes ethnic minorities appear less American. Process data showed that this effect was mediated by increased threats to American distinctiveness. By contrast, emphasizing ethnic minorities' national service (versus local community service) highlights ethnic minorities' fit with the civic responsibility prototype and makes ethnic minorities appear more American (Experiments 2–3). Process data showed that this effect was mediated by enhanced American distinctiveness. Collectively, these experiments highlight how inclusion of ethnic minorities in the nation can wax and wane depending on which definition of national character is salient in the social context. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
54.
We present two masked priming lexical decision experiments in which we examined whether a nonword prime word would activate
associative/semantic information from its corresponding addition neighbor (e.g.,lght-DARK via the addition neighborlight), producing associative/semantic priming. The rationale was the following: If a nonword prime with a missing letter produced
a semantic/associative priming effect, this would clearly indicate that this nonword was activating the lexical/semantic representations
of its base word, thereby reinforcing the models of visual-word recognition in which the orthographic representations produced
bylght (orligt) andlight are quite similar (e.g., SOLAR, SERIOL, open-bigram, and overlap models). The results showed that the magnitude of the masked
associative priming effect with subset primes was remarkably similar to that of the priming effect with the corresponding
word prime. Furthermore, the magnitude of the associative priming effect was similar when the deleted letter was a vowel and
when the deleted letter was a consonant. 相似文献
55.
ABSTRACTUsing longitudinal data from a British longitudinal cohort study (ALSPAC), the current study examines “developmental domains” from individual, peer, and community risk factors. Using four logistic regression models, we looked at 10 correlations between children’s experience with risk factors outlined by the literature and criminal gang association. Gang membership was associated with drug use, delinquent peers, and disorganized neighborhoods. Further, early diagnoses of childhood aggression, ADHD, depression, and Oppositional Defiant Disorder, were not associated with later, adolescent youth gang membership. Our results suggest community based programs that stem from social learning policies and collective efficacy militate against gang growth. 相似文献
56.
57.
Understanding the dynamics of memory change is one of the current challenges facing cognitive neuroscience. Recent animal work on memory reconsolidation shows that memories can be altered long after acquisition. When reactivated, memories can be modified and require a restabilization (reconsolidation) process. We recently extended this finding to human episodic memory by showing that memory reactivation mediates the incorporation of new information into existing memory. Here we show that the spatial context plays a unique role for this type of memory updating: Being in the same spatial context during original and new learning is both necessary and sufficient for the incorporation of new information into existing episodic memories. Memories are automatically reactivated when subjects return to an original learning context, where updating by incorporating new contents can occur. However, when in a novel context, updating of existing memories does not occur, and a new episodic memory is created instead. 相似文献
58.
This article investigates how the perspective from which we see an object affects memory. Object identification can be affected
by the orientation of the object. Palmer, Rosch, and Chase (1981) coined the term canonical to describe perspectives in which
identification performance is best. We present two experiments that tested the effects of object perspective on memory. Our
results revealed a double dissociation between task (recognition and recall) and type of object perspective. In recognition,
items studied in the noncanonical viewpoint produced higher proportions of “old” responses than did items studied in the canonical
viewpoint, whereas new objects presented from a noncanonical viewpoint produced fewer “old” responses than did new objects
presented from the canonical viewpoint. In free recall, conversely, objects studied from the noncanonical viewpoint produced
lower recall rates than did objects studied from the canonical viewpoint. These results, which reveal a pattern similar to
word frequency effects, support the psychological reality of canonical viewpoints and the frequencyof-exposure-based accounts
of canonical viewpoint effects. 2008 Psychonomic Society, Inc 相似文献
59.
This study examined differential symptom functioning (DSF) in ADHD symptoms across Malay and Chinese children in Malaysia. Malay (N=571) and Chinese (N=254) parents completed the Disruptive Behavior Rating Scale, which lists the DSM-IV ADHD symptoms. DSF was examined using the multiple indicators multiple causes (MIMIC) structural equation modeling procedure. Although DSF was found for a single inattention (IA) symptom and three hyperactivity-impulsivity (HI) symptoms, all these differences had low effect sizes. Controlling for these DSF, Chinese children had higher IA and HI latent factor scores. However the effect sizes were small. Together, these findings suggest adequate support for invariance of the ADHD symptoms across these ethno-cultural groups. The implications of the findings for cross-cultural invariance of the ADHD symptoms are discussed. 相似文献
60.
Alexander K. Moore David M. Munguia Gomez Emma E. Levine 《Social and Personality Psychology Compass》2019,13(7)
Many everyday dilemmas reflect a conflict between two moral motivations: the desire to adhere to universal principles (integrity) and the desire to improve the welfare of specific individuals in need (benevolence). In this article, we bridge research on moral judgment and trust to introduce a framework that establishes three central distinctions between benevolence and integrity: (1) the degree to which they rely on impartiality, (2) the degree to which they are tied to emotion versus reason, and (3) the degree to which they can be evaluated in isolation. We use this framework to explain existing findings and generate novel predictions about the resolution and judgment of benevolence–integrity dilemmas. Though ethical dilemmas have long been a focus of moral psychology research, recent research has relied on dramatic dilemmas that involve conflicts of utilitarianism and deontology and has failed to represent the ordinary, yet psychologically taxing dilemmas that we frequently face in everyday life. The present article fills this gap, thereby deepening our understanding of moral judgment and decision making and providing practical insights on how decision makers resolve moral conflict. 相似文献