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31.
GABA‐A receptor is a transmembrane hetero‐oligomeric protein which consists of five subunits, the combination of which confers unique pharmacological properties to the receptor. It is well‐known that the GABAergic system is involved in the modulation of aggression. However, the role of α5/GABA‐A receptors has not been explored. In this study, we examined the effect of L‐655,708 (0.625‐5 mg/kg), a selective ligand for the benzodiazepine site of GABA‐A receptors which contain the α5 subunit, on agonistic behavior elicited by isolation in male mice. Individually housed mice were exposed to an anosmic “standard opponent” 30 min after drug administration, and the encounters were videotaped and evaluated using an ethologically based analysis. L‐655,708 (5 mg/kg) exhibited an ethopharmacological profile characterized by a marked reduction of the time spent in offensive behavior (threat and attack) without affecting immobility, accompanied by a significant increase of avoidance/flee and nonsocial exploration behaviors, suggesting that the antiaggressive effect of the drug is unselective. Overall, this behavioral profile might indicate the existence of an anxiogenic‐like activity of L‐655,708 in mice. Aggr. Behav. 30:319–325, 2004. © 2004 Wiley‐Liss, Inc. 相似文献
32.
Verb bias, or the tendency of a verb to appear with a certain type of complement, has been employed in psycholinguistic literature
as a tool to test competing models of sentence processing. To date, the vast majority of sentence processing research involving
verb bias has been conducted almost exclusively with monolingual speakers, and predominantly with monolingual English speakers,
despite the fact that most of the world’s population is bilingual. To test the generality of competing theories of sentence
comprehension, it is important to conduct cross-linguistic studies of sentence processing and to add bilingual data to theories
of sentence comprehension. Given this, it is critical for the field to develop verb bias estimates from monolingual speakers
of languages other than English and from bilingual populations. We begin to address these issues in two norming studies. Study
1 provides verb bias norming data for 135 Spanish verbs. A second aim of Study 1 was to determine whether verb bias estimates
remain stable over time. In Study 2, we asked whether Spanish—English speakers are able to learn verb-specific information,
such as verb bias, in their second language. The answer to this question is critical to conducting studies that examine when,
during the course of sentence comprehension, bilingual speakers exploit verb information specific to the second language.
To facilitate cross-linguistic work, we compared our verb bias results with those provided by monolingual English speakers
in a previous norming study conducted by Garnsey, Lotocky, Pearlmutter, and Myers (1997). Our Spanish data demonstrated that
individual verbs showed significant similarities in their verb bias across the 3 years of data collection. We also show that
bilinguals are able to learn the biases of verbs in their second language, even when immersed in the first language environment.
Appendixes A–C, containing the bilingual norms discussed in the article, may be downloaded from http://brm.psychonomic-journals.org/content/supplemental. 相似文献
33.
Drago V Finney GR Foster PS Amengual A Jeong Y Mizuno T Crucian GP Heilman KM 《Brain and cognition》2008,66(2):140-144
Lesion studies demonstrate that the right temporal-parietal region (RTP) is important for mediating spatial attention. The RTP is also involved in emotional experiences that can be evoked by art. Normal people vary in their ability to allocate spatial attention, thus, people who can better allocate attention might also be more influenced by the emotional messages of the paintings (evocative impact). Seventeen healthy participants bisected an unlabeled 100mm line and their performance on this task was used to create two groups, individuals who were more (mALB) and less accurate (lALB). These participants also judged 10 paintings on five qualities, Evocative Impact, Aesthetics, Novelty, Technique, and Closure by marking a 100mm line from 1 (low degree) to 10 (high degree). An ANOVA indicated differences in accuracy on the line bisection (LB) between the two groups. Additional ANOVAs, using the quality ratings as the dependent measure, revealed that the mALB group scored the Evocative Impact greater than the lALB group. These results suggest that the differences in attentional bias between the two groups, as indicated by their LB performance, might influence their evocative impact or reactions and also be a 'barometer' of other RTP functions, including emotional processing. 相似文献
34.
Selective retrieval is a rather difficult task, and especially so when one attempts to retrieve personal representations such as faces or names. Retrieval of memories under strong competition conditions is pervasive in human memory and some have suggested that inhibitory control is used to overcome interference between competing stimuli. In the present study, we used the retrieval practice paradigm to investigate if competition among personal representations (such as facial features and names) is also resolved by inhibitory mechanisms. This question is theoretically relevant, since personal representations have been said to have a special status on cognition. Moreover, some models of face recognition assume that interference can arise between different representations, but that this interference would be automatically and rapidly solved, with no need for a controlled inhibitory mechanism to act. In two experiments we showed RIF for facial features and familiar names, but only when participants had to actively retrieve some information. This suggests that personal information is subject to mechanisms of inhibitory control, which could help explain everyday life difficulties in processes such as face feature recognition or name retrieval. 相似文献
35.
Meseguer de Pedro M Soler Sánchez MI García-Izquierdo M Sáez Navarro MC Sánchez Meca J 《Psicothema》2007,19(2):225-230
This work analyses the way in which various psychosocial risk indicators may predict mobbing. A sample of 638 workers, 168 men and 470 women, from the fruit-and-vegetable sector was evaluated. An anonymous questionnaire was administered to all employees who were present on the evaluation days in the companies comprising the study. After analysing the data obtained with the mobbing questionnaire NAQ-RE (Sáez, García-Izquierdo, and Llor, 2003) and with the psychosocial risk factors evaluation method of the INSHT (Martín and Pérez, 1997), using canonical regression, we found that several psychosocial factors such as role definition, mental workload, interest in the workers, and supervision / participation predict two types of mobbing: personal mobbing and work-performance-related mobbing. 相似文献
36.
Navarro DJ 《Psychonomic bulletin & review》2007,14(5):823-833
The idea that categorization decisions rely on subjective impressions of similarities between stimuli has been prevalent in
much of the literature over the past 30 years and has led to the development of a large number of models that apply some kind
of decision rule to similarity measures. A recent article by Smith (2006) has argued that thesesimilarity—choice models of categorization have a substantial design flaw, in which the similarity and the choice components effectively cancel
one another out. As a consequence of this cancellation, it is claimed, the relationship between distance and category membership
probabilities is linear in these models. In this article, I discuss these claims and show mathematically that in those cases
in which it is sensible to discuss the relationship between category distance and category membership at all, the function
relating the two is approximately logistic. Empirical data are used to show that a logistic function can be observed in appropriate
contexts. 相似文献
37.
Daniel J. Navarro 《Journal of mathematical psychology》2007,51(2):85-98
An analysis of the “response scaling” parameter in the Generalized Context Model is presented. In light of the existing debate over the behavior of the model when this parameter is included, three different interpretations are discussed, in order to illustrate the effect of the parameter at the decision level, the category similarity level, and the representational structure level. 相似文献
38.
Sjoerd F. Pennekamp Bertjan Doosje Alejandra Alarcon Henriquez 《Journal of experimental social psychology》2009,45(4):778-787
Two studies investigated the reactions of minority group members to messages about identity expression by ingroup and outgroup sources. Our main hypothesis was that compared to ingroup sources, outgroup sources arouse more anger when they argue for identity suppression. In the first study homosexuals evaluated an outgroup source arguing for identity suppression more negatively than an ingroup source, felt more threatened by this source and as a result, experienced stronger feelings of anger towards this source. The second study among members of a language-based minority replicated and extended these findings. Furthermore we showed that the anger that is experienced towards an outgroup source causes a willingness to change the opinion of this source. When ingroup or outgroup sources supported identity expression, evaluations and experience of anger did not differ in both studies. The importance of a source’s group membership in reactions to opinions about one’s group is discussed. 相似文献
39.
Paul J. Silvia Emily C. Nusbaum Christopher Berg Christopher Martin Alejandra OConnor 《Journal of research in personality》2009,43(6):1087-1090
What are creative people like? Openness to experience is important to creativity, but little is known about plasticity, the higher-order factor that subsumes openness. College students (n = 189) completed measures of the Big Five and measures of creative cognition (fluency and quality of divergent thinking), everyday creative behaviors, creative achievement, and self-rated creativity. Latent variable models found broad effects of openness to experience and few effects of the other four domains. At the higher-order level, plasticity predicted higher scores on nearly all of the facets of creativity, and stability had several significant effects. For some creativity measures, plasticity and stability had opposing effects. Tests of latent interactions found no significant effects: plasticity and stability predict creatively independently, not jointly. 相似文献
40.
The aims of this study are to consider the experience of flow from a nonlinear dynamics perspective. The processes and temporal
nature of intrinsic motivation and flow, would suggest that flow experiences fluctuate over time in a dynamical fashion. Thus
it can be argued that the potential for chaos is strong. The sample was composed of 20 employees (both full and part time)
recruited from a number of different organizations and work backgrounds. The Experience Sampling Method (ESM) was used for
data collection. Once obtained the temporal series, they were subjected to various analyses proper to the complexity theory
(Visual Recurrence Analysis and Surrogate Data Analysis). Results showed that in 80% of the cases, flow presented a chaotic
dynamic, in that, flow experiences delineated a complex dynamic whose patterns of change were not easy to predict. Implications
of the study, its limitations and future research are discussed. 相似文献