Is it dangerous? The role of an emotional visual search strategy and threat-relevant training in the detection of guns and knives

Counter-terrorism strategies rely on the assumption that it is possible to increase threat detection by providing explicit verbal instructions to orient people's attention to dangerous objects and hostile behaviours in their environment. Nevertheless, whether verbal cues can be used to enhance threat detection performance under laboratory conditions is currently unclear. In Experiment 1, student participants were required to detect a picture of a dangerous or neutral object embedded within a visual search display on the basis of an emotional strategy ‘is it dangerous?’ or a semantic strategy ‘is it an object?’. The results showed a threat superiority effect that was enhanced by the emotional visual search strategy. In Experiment 2, whilst trainee police officers displayed a greater threat superiority effect than student controls, both groups benefitted from performing the task under the emotional than semantic visual search strategy. Manipulating situational threat levels (high vs. low) in the experimental instructions had no effect on visual search performance. The current findings provide new support for the language-as-context hypothesis. They are also consistent with a dual-processing account of threat detection involving a verbally mediated route in working memory and the deployment of a visual template developed as a function of training.     

Evidence of rapid correlation‐based perceptual category learning by 4‐month‐olds

Young infants are very sensitive to feature distribution information in the environment. However, existing work suggests that they do not make use of correlation information to form certain perceptual categories until at least 7 months of age. We suggest that the failure to use correlation information is a by‐product of familiarization procedures that encourage infants to over encode individual exemplars rather than relations across exemplars. By changing the exemplar presentation regime to one in which exemplars are rapidly (2 s durations) and repeatedly presented we find that 4‐month‐olds can form perceptual categories on the basis of feature correlation information. In addition, this ability emerges rapidly between 114 and 134 days. We argue that the ability to process correlation information is present very early on but that the demonstration of that ability in categorization tasks is mediated by the demands of the task the infant is tested with. Copyright © 2005 John Wiley & Sons, Ltd.     

Nonresident Suicides in England: A National Study

Little is known about the numbers and characteristics of people who travel away from home before dying by suicide. Therefore, this studied attempts to identify the sociodemographic characteristics, location, and method of suicide in people who died distant from home, in a national sample. Data were collected on all English suicides and a patient population; nonresident suicides resided in one Health Authority but died in a different one. Twelve percent of suicides were nonresident and features of these included: young age, social adversity, and severe mental illness. In conclusion, both individual‐ and area‐based factors are likely to contribute to suicide away from home.     

The effect of competitive and cooperative contexts on comparative optimism

Several common characteristics are shared by competition and comparative optimism; and comparative optimism has often been observed in competitive environments like entrepreneurial fields or areas that require skills. Competitive context could be an explanatory factor for comparative optimism neglected to date. The aim of this article is to test the links between competition (vs. cooperation) and comparative optimism. In Study 1, participants in different academic majors with a more or less competitive nature (respectively, medical studies and human sciences studies) answered questions about their future and that of others. In Study 2, for the participants in the less competitive course of study (human sciences studies), we presented their studies as being either competitive or cooperative. The impact of this context was tested as a function of the closeness or distance between the participants and the comparison targets. The results of both studies showed that competition increased the expression of comparative optimism. In Study 2, this effect emerged more when the comparison target was distant than when it was close, with proximity hindering the competitive relationship between the self and others. The feeling of competition with others contributed to a better understanding of comparative optimism and initiated new explanations for its emergence.     

Perceptions of comparative optimism and perceptions of career success: Experimental evidence for a bidirectional effect

ABSTRACT

Audiences generally view people who display more (versus less) comparative optimism more favorably. We explored whether audiences view a target who displays comparative optimism as more professionally successful, and conversely, whether they view a target who is more professionally successful as more comparatively optimistic. In Study 1, participants estimated the career success of a target that varied in level of comparative optimism. In Study 2, participants estimated the level of comparative optimism of a target that varied in career success. The results revealed that observers rated comparative optimists as likely to have successful careers, and rated people with successful careers as likely to display comparative optimism. Inferences about personal agency account for the bidirectional relationship.