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221.
Individuals with Alzheimer's disease (AD) are often reported to have reduced verbal short-term memory capacity, typically attributed to their attention/executive deficits. However, these individuals also tend to show progressive impairment of semantic, lexical, and phonological processing which may underlie their low short-term memory capacity. The goals of this study were to assess the contribution of each level of representation (phonological, lexical, and semantic) to immediate serial recall performance in 18 individuals with AD, and to examine how these linguistic effects on short-term memory were modulated by their reduced capacity to manipulate information in short-term memory associated with executive dysfunction. Results showed that individuals with AD had difficulty recalling items that relied on phonological representations, which led to increased lexicality effects relative to the control group. This finding suggests that patients have a greater reliance on lexical/semantic information than controls, possibly to make up for deficits in retention and processing of phonological material. This lexical/semantic effect was not found to be significantly correlated with patients’ capacity to manipulate verbal material in short-term memory, indicating that language processing and executive deficits may independently contribute to reducing verbal short-term memory capacity in AD. 相似文献
222.
The contextual role of sales volatility, the complexity of customers’ purchase decisions, and the level of monitoring on the performance impact of incentives are examined. Results reveal that the use of an incentive plan is positively related to all three dimensions of organizational performance. This relationship is moderated positively by the customers’ purchase decisions and negatively by sales volatility and monitoring. In addition, the contextual role of sales volatility, the complexity of customers’ purchase decisions, and the level of monitoring differ according to the performance measure used. Implications of the findings are presented, followed by limitations and future research directions. 相似文献
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Charlotte L. Alcock Paul M. Camic Chris Barker Catherine Haridi Rosie Raven 《Journal of community & applied social psychology》2011,21(5):419-432
An intergenerational community intervention based on contact theory and using ‘photovoice’ methods was designed to change negative age‐group stereotypes and promote sense of community. A focused ethnographic approach was adopted. Participants were 18 young people and 13 older adults. Data from focus groups, carried out with each generation separately, and observational field notes were analysed using thematic analysis; credibility checks were carried out by auditing and respondent validation. Before the intergenerational intervention, both generations presented age‐group stereotypes and both experienced only a weak sense of community. After the intervention, both generations felt that intergenerational contact had reduced age‐group stereotypes and enhanced recognition of intergenerational similarity; many also articulated a positive sense of community. The intervention has promise for helping young people and older adults to feel more socially included. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
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Ash S McMillan C Gross RG Cook P Gunawardena D Morgan B Boller A Siderowf A Grossman M 《Brain and language》2012,120(3):290-302
Few studies have examined connected speech in demented and non-demented patients with Parkinson’s disease (PD). We assessed the speech production of 35 patients with Lewy body spectrum disorder (LBSD), including non-demented PD patients, patients with PD dementia (PDD), and patients with dementia with Lewy bodies (DLB), in a semi-structured narrative speech sample in order to characterize impairments of speech fluency and to determine the factors contributing to reduced speech fluency in these patients. Both demented and non-demented PD patients exhibited reduced speech fluency, characterized by reduced overall speech rate and long pauses between sentences. Reduced speech rate in LBSD correlated with measures of between-utterance pauses, executive functioning, and grammatical comprehension. Regression analyses related non-fluent speech, grammatical difficulty, and executive difficulty to atrophy in frontal brain regions. These findings indicate that multiple factors contribute to slowed speech in LBSD, and this is mediated in part by disease in frontal brain regions. 相似文献
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Shira Gabriel Brianna Harris Mauricio Carvallo Jordan D. Troisi 《Social and Personality Psychology Compass》2012,6(11):826-839
Although decades of research provide consistent evidence supporting the perspective that the self is divided into social and personal components each with unique and predictable motivational associations, the current paper argues that something important has been overlooked. Specifically, what has been lost is the acknowledgment that although different components of self can be activated, and can have important implications, the two aspects of self are highly interconnected. Specifically in this paper, it is argued that (i) the independent self is affected by social motivations and (ii) the social self is affected by independent motivations. Two studies are presented in support of these hypotheses. We conclude by comparing our perspective with existing theories of the self and by discussing implications for the study of the self. 相似文献
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Based on social identity principles we explore the efficacy of a leadership intervention in elite disability sport. A 2-year longitudinal design involved an elite male disability soccer team that prepared for a World Championship in Year 1 and then reformed for Paralympic competition in Year 2. Athlete data indicated marginal to significant increases from baseline to intervention phases in social identification, identity leadership displayed by staff, and hours practice completed away from training camps, but no significant change in mobilization of effort (in Year 1 and 2). We discuss the applied implications, study limitations, and opportunities for future researchers. 相似文献