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171.
Lamy D 《Psychonomic bulletin & review》2005,12(6):1112-1119
Subjects’ ability to override attentional capture by salient distractors during singleton search has been attributed to the
adoption of an attentional set for the type of discontinuity characterizing the target (Folk, Remington, & Johnston, 1992)
or to fast disengagement of attention from the salient distractor’s location (Theeuwes, Atchley, & Kramer, 2000). The present
results support an alternative account by showing that temporal expectancies modulate attentional capture. In a color singleton
search, an irrelevant onset preceding the target by a given time interval produced capture when the distractor-to-target interval
varied unpredictably but failed to do so when this interval was predictable. Moreover, with unpredictable intervals and moderately
salient stimuli, capture was overridden at the expected average interval. These findings invite caution when stimulus onset
asynchrony manipulations are used to study the temporal deployment of attention, since they demonstrate that such manipulations
introduce powerful temporal expectations. 相似文献
172.
The authors investigated how a collective self-construal orientation in combination with positive social comparisons "turns off" the negative effects of stereotype threat. Specifically, Experiment 1 demonstrated that stereotype threat led to increased accessibility of participants' collective self ("we"). Experiment 2 showed that this feeling of "we-ness" in the stereotype threat condition centered on the participants' stereotyped group membership and not on other important social groups (e.g., students). Experiment 3 indicated that in threat situations, when participants' collective self is accessible, positive social comparison information led to improved math test performance and less concern, whereas in nonthreat situations, when the collective self is less accessible, positive comparison information led to worse test performance and more concern. Our final experiment revealed that under stereotype threat, only those comparison targets who are competent in the relevant domain (math), rather than in domains unrelated to math (athletics), enhanced participants' math test performance. 相似文献
173.
Accumulating evidence suggests the existence of a processing bias in favor of threat-related stimulation in anxious individuals. Using behavioral and ERP measures, the present study investigated the deployment of attention to face stimuli with different emotion expressions in high-anxious and low-anxious participants. An attention-shifting paradigm was used in which faces with neutral, angry, fearful, sad, or happy expressions were presented singly at fixation. Participants had to fixate on the face cue and then discriminate a target shape that appeared randomly above, below, to the left, or right of the fixated face. The behavioral data show that high-anxious participants were slower to respond to targets regardless of the emotion expressed by the face cue. In contrast, the ERP data indicate that threat-related faces elicited faster latencies and greater amplitudes of early ERP components in high-anxious than in low-anxious individuals. The between-group pattern in ERP waveforms suggests that the slower reaction times in high-anxious participants might reflect increased attentional dwelling on the face cues, rather than a general slowing of response enacting. 相似文献
174.
The objective of this paper was to investigate under what conditions object-based effects are observed. Recently, Watson and Kramer (1999) used a divided-attention task and showed that unless top-down factors induce a bias toward selection at a higher level, object-based effects are obtained when same-object targets belong to the same uniformly connected (single-UC) region, but not when they belong to different single-UC regions grouped into a higher order object (grouped-UC regions). We refine this claim by proposing that a critical factor in determining whether or not object-based effects with grouped-UC regions are observed is the need to shift attention. The results of four experiments support this hypothesis. Stimuli and displays were similar to those used by Egly, Driver, and Rafal (1994). Subjects had to make size judgments. Using different paradigms, we obtained object-based effects when the task required shifts of attention (spatial cuing, same vs. different judgment with asynchronous target onsets), but not when attention remained either broadly distributed (same vs. different judgment with simultaneous targets) or tightly focused (response competition paradigm). 相似文献
175.
Dominique Autier-Dérian Bertrand L. Deputte Karine Chalvet-Monfray Marjorie Coulon Luc Mounier 《Animal cognition》2013,16(4):637-651
In most social interactions, an animal has to determine whether the other animal belongs to its own species. This perception may be visual and may involve several cognitive processes such as discrimination and categorization. Perceptual categorization is likely to be involved in species characterized by a great phenotypic diversity. As a consequence of intensive artificial selection, domestic dogs, Canis familiaris, present the largest phenotypic diversity among domestic mammals. The goal of our study was to determine whether dogs can discriminate any type of dog from other species and can group all dogs whatever their phenotypes within the same category. Nine pet dogs were successfully trained through instrumental conditioning using a clicker and food rewards to choose a rewarded image, S+, out of two images displayed on computer screens. The generalization step consisted in the presentation of a large sample of paired images of heads of dogs from different breeds and cross-breeds with those of other mammal species, included humans. A reversal phase followed the generalization step. Each of the nine subjects was able to group all the images of dogs within the same category. Thus, the dogs have the capacity of species discrimination despite their great phenotypic variability, based only on visual images of heads. 相似文献
176.
Gaston Godin Camille Gagné Jean Maziade Louise Moreault Dominique Beaulieu Sylvie Morel 《Psychology & health》2013,28(4):423-441
Abstract The purpose of these cross sectional studies was to identify the psychosocial factors explaining women's intention to have a mammography within the next two years and their intention to have a clinical breast examination (CBE) by a professional within the next year. Two random samples of women aged 40–69 years (na = 354, nb = 344) completed a self-administered questionnaire that investigated theoretical constructs of the theory of planned behavior. The results of structural equation modeling showed that subjective norms and perceived behavioral control explained 81 % of the variance in intention of having a mammography. Sixty-five percent (65%) of the variance in intention of having a CBE was explained by attitude and perceived behavioral control. In conclusion, women need to be better informed, have better skills to overcome psychological and physical barriers in performing preventive breast behaviors, and promotion of preventive breast cancer methods should consider people significant for women. 相似文献
177.
Sigmund Valaker Eric Arne Lofquist Yantsislav Yanakiev Dominique Kost 《Military psychology》2013,25(6):390-405
Coordination is critical to the success of multinational military operations and may be fostered by predeployment training. We argue that whether such training is related to a high degree of perceived coordination at the individual level is likely to depend on whether individuals experience a low degree of organizational obstacles to information sharing. We examined this using data from the North Atlantic Treaty Organization (NATO) Kosovo Force headquarters (survey: n = 131). We controlled for whether it was the participants’ first deployment, the participants’ background (military or civilian), the amount of time spent in the headquarters by participants, whether differences pertaining to culture and opinions were valued by the organization, the quality of supervisor/subordinate relationships, and the degree of national cultural obstacles to information sharing. The results showed no significant direct effects on coordination from 3 different training configurations: national training, multinational training, and a combination of national and multinational training. However, we found a negative direct effect from organizational obstacles to information sharing on coordination, and support for organizational obstacles to information sharing as negatively moderating the multinational predeployment training and coordination relationship. Qualitative interviews (n = 14) indicated that informal information sharing, and the problems exchanging information from tactical to operational levels could hinder coordination. Interventions to foster coordination could benefit from a focus on multinational training and lowering organizational obstacles to information sharing. Our findings contribute to more precisely pinpointing the types of training that are useful in multinational operations, as well as the factors upon which training transfer is contingent. 相似文献
178.
Episodic memory is a polygenic behavioral trait with substantial heritability estimates. Despite its complexity, recent empirical evidence supports the notion that behavioral genetic studies of episodic memory might successfully identify trait-associated molecules and pathways. The development of high-throughput genotyping methods, of elaborated statistical analyses and of phenotypic assessment methods at the neural systems level will facilitate the reliable identification of novel memory-related genes. Importantly, a necessary crosstalk between behavioral genetic studies and investigation of causality by molecular genetic studies will ultimately pave the way towards the identification of biologically important, and hopefully druggable, genes and molecular pathways related to human episodic memory. 相似文献
179.
Dominique Rivi��re 《Journal of Academic Ethics》2011,9(3):193-204
This paper shares my reflections on the research ethics review process, from the point of view of both a qualitative researcher
and a member of an institutional research ethics review board. By considering research ethics review, first as practice, then as policy, as a relationship and, finally, as a performance, I attempt to outline a new vision of research ethics, one that engages seriously with the relationship between receiving
ethics approval, and conducting ethical research. 相似文献
180.
Numerous studies have shown that repetition of search-relevant attributes facilitates visual search performance. For example, Maljkovic and Nakayama (1994) showed that when observers search for a target defined by its color and report its shape, repetition of the target color speeds search, an effect known as priming of pop-out. While intertrial feature priming in search was initially thought to affect perceptual processes, the idea that it also affects postselection stages of processing is increasingly acknowledged. However, because in previous studies repetition of the motor response has typically been confounded with repetition of the response feature, it is not clear what mechanisms underlie the postselection effect of intertrial priming. In the present study, we dissociated the two repetition types. The results showed that repetition of the target-defining attribute from the previous trial affects selection of the motor response but not discrimination of the response attribute. The implications for current accounts of intertrial priming are discussed. 相似文献