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211.
Lavie (1995) proposed a load account of selective attention, which holds that spare capacity is involuntarily allocated to the processing of irrelevant stimuli. In support of this account, Lavie and Cox (1997) combined a letter search task with a flanker task and found that increasing load (search set size) resulted in decreased interference from an irrelevant distractor letter. In three experiments using a very similar procedure, we varied distractor location and distractor distinctiveness and observed that as load increased (from set size 2 to set size 6), there was a consistent reduction in interference. Critically, we addressed a fundamental hypothesis derived from the load account-that practice reduces capacity demands. This hypothesis leads to the rather counterintuitive prediction that as performance improves with practice, distractor processing should actually increase. Indeed, we found that interference in a high-load condition (set size 6), but not in a low-load condition (set size 2), did increase with practice. We describe a two-stage dilution account of attention that accommodates these results. 相似文献
212.
Some studies have suggested that older adults remember more positive than negative valence information, relative to younger
adults, whereas other studies have reported no such difference. We tested whether differences in encoding instructions and
in personal relevance could account for these inconsistencies. Younger and older adults were instructed either to passively
view positive, negative, and neutral pictures or to actively categorize them by valence. On a subsequent incidental recall
test, older adults recalled equal numbers of positive and negative pictures, whereas younger adults recalled negative pictures
best. There was no effect of encoding instructions. Crucially, when the pictures were grouped into high and low personal relevance,
a positivity bias emerged in older adults only for low-relevance pictures, suggesting that the personal relevance of pictures
may be the factor underlying cross-study differences. 相似文献
213.
J. Neufeind B. Dritschel A.J. Astell M.D. MacLeod 《Behaviour research and therapy》2009,47(4):275-284
While it is well documented that autobiographical memory (ABM) recall is affected in Posttraumatic Stress Disorders (PTSD), less is known about the cognitive mechanisms that underlie this pattern. This paper presents two research studies which investigated the role of thought suppression in the recall of ABMs. Study 1 assessed the role of thought suppression as a correlate of ABM retrieval in an undergraduate student sample (n = 50). The results showed that higher levels of trait thought suppression were significantly correlated with faster recall of negative episodic memories as well as reduced recall of personal semantic memories. Thought suppression remained as a significant predictor of ABM recall, even when the participants' levels of depression and post-traumatic stress reactions were considered. Study 2 investigated the causal effects of thought suppression on ABM recall. 64 undergraduate students were shown a negative video clip and were asked either to suppress any thought of the video or simply to monitor their thoughts immediately thereafter. Results showed that suppression directly led to significantly enhanced negative episodic ABM recall, as well as a significantly reduced ability to recall personal semantic memories. 相似文献
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Three studies examined the hypothesis that shared cognition and group identification can be each other's catalysts as well as driving forces behind multiparty negotiation outcomes that might not otherwise be realized. Experiment 1 demonstrates that clear links exist between communication, the development of shared cognition and group identification, and integrative outcomes. The subsequent experiments isolated the causal directions of these links. Experiment 2 showed that stronger group identification before interaction was associated with the development of shared cognition in a subsequent phase of negotiation, which then increased the attainment of integrative outcomes. Conversely, a direct manipulation of shared cognition in Experiment 3 resulted in stronger identification during negotiation, which then led to more integrative outcomes. Thus, we find support for the theoretical claim that group identification can be both the product of, and precursor to, the development of shared cognition, with communication functioning as the interface between the two. 相似文献
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Matthew Herbert Lies Notebaert Sam Parsons Elaine Fox Colin MacLeod 《Applied cognitive psychology》2020,34(2):425-433
The objective of this study is to determine whether attention toward fear messages is affected by variation in the controllability of the associated danger. There is no consensus regarding the effectiveness of fear appeals in driving adaptive behaviour, and it may be the case that threat messages fail to capture attention if the associated danger is not explicitly controllable. One hundred and sixty undergraduate university students completed a computer task that involved exposure to threat cues signalling a danger (money loss). In high control blocks, attending to threat cues provided a high chance of avoiding the danger, whereas in low control blocks, attending to threat cues provided little chance of avoiding the danger. Attentional capture by threat was measured. A mixed-design analysis of variance showed there was greater attentional capture by threat cues in high control blocks compared with low control blocks. This effect was observed with a short stimulus exposure duration and was magnified with a long exposure duration. Fear appeals could capture attention to a greater degree if the danger related to the threat message was communicated as being controllable. This has significant practical implications for the implementation of fear appeals. 相似文献
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