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51.
Are age differences in consistent-mapping visual search due to feature learning or attention training? 总被引:1,自引:0,他引:1
In this experiment, the ability of young and old adults to differentially modify the attention-attraction strength of targets and distractors relative to feature differentiation was examined. Eight young and 8 old subjects were trained for 8,000 trials in conditions that allowed maximal target-distractor strength differentiation, inhibited target-distractor strength differentiation but facilitated feature differentiation, or inhibited both target-distractor strength differentiation and feature differentiation. Age-related performance was assessed between and within conditions during training and with reversal conditions where the roles of targets and distractors were switched. The pattern of data during training and at reversal supports the proposal that age differences in extended-practice visual search are due to differences in the ability to differentially strengthen targets and distractors. 相似文献
52.
Working memory functioning in developmental dyslexia 总被引:1,自引:0,他引:1
Working memory impairments in dyslexia are well documented. However, research has mostly been limited to the phonological domain, a modality in which people with dyslexia have a range of problems. In this paper, 22 adult students with dyslexia and 22 age- and IQ-matched controls were presented with both verbal and visuospatial working memory tasks. Performance was compared on measures of simple span, complex span (requiring both storage and processing), and dynamic memory updating in the two domains. The dyslexic group had significantly lower spans than the controls on all the verbal tasks, both simple and complex, and also on the spatial complex span measure. Impairments remained on the complex span measures after controlling statistically for simple span performance, suggesting a central executive impairment in dyslexia. The novelty of task demands on the initial trials of the spatial updating task also proved more problematic for the dyslexic than control participants. The results are interpreted in terms of extant theories of dyslexia. The possibility of a supervisory attentional system deficit in dyslexia is also raised. It seems clear that working memory difficulties in dyslexia extend into adulthood, can affect performance in both the phonological and visuospatial modalities, and implicate central executive dysfunction, in addition to problems with storage. 相似文献
53.
Elevations in exclusion error rates (i.e., responding with the target stimulus despite instructions to the contrary) in experiments with masked, briefly presented stimuli have been attributed to unconscious perception. The present studies tested the validity of exclusion methods for studying unconscious perception. Experiment 1 replicated Merikle, Joordens, and Stolz (1995; Experiment 1) by showing more exclusion errors (exclusion failure) for masked word stimuli in a stem completion task. However, this experiment did not replicate the finding of fewer exclusion errors (exclusion success) at long stimulus durations. Experiments 2 and 3 showed that exclusion errors are accompanied by significant discrimination sensitivity to the target stimulus, which suggests conscious perception of the target stimulus. Experiments 3 and 4 demonstrated that the exclusion errors obtained from stem completion tasks depend in part on the exclusion method. Altogether, elevated exclusion failure does not provide an unambiguous demonstration of unconscious perception. 相似文献
54.
Context matters: Explicit and implicit reminders of ingroup privilege increase collective guilt among foreigners in a developing country
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Katharine H. Greenaway Kylie Fisk Nyla R. Branscombe 《Journal of applied social psychology》2017,47(12):677-681
We test three ways context matters in the study of intergroup inequality: where participants are approached, who interacts with participants, and how researchers ask participants questions. Regarding how, we replicate a finding that framing intergroup inequality as outgroup disadvantage rather than ingroup privilege reduces collective guilt in a novel context. Regarding where, we go beyond the laboratory to test foreigners in Nepal—a country where inequality is highly salient. Regarding who, we had participants approached by an ingroup (foreign) experimenter or an outgroup (Nepalese) experimenter. We found an outgroup disadvantage framing reduced collective guilt relative to ingroup privilege framing, but only when delivered by an ingroup member. This highlights the importance of taking where, who, and how into account to fully understand the contextual nature of intergroup emotion. 相似文献
55.
Courtney E. Zents Amy K. Fisk Cris W. Lauback 《Journal of Creativity in Mental Health》2017,12(1):82-98
Research in the field of animal-assisted therapy has shown that therapy dogs have a positive social-emotional impact on individuals in hospitals, nursing homes, and counseling. Recently, the literature has suggested that therapy dogs can yield positive psychological, social, and academic outcomes in schools, although this research is quite limited. The intent of this study was to examine perceptions on the effectiveness of therapy dogs in schools for promoting students’ psychological well-being, and an overall positive school climate. Preliminary evidence shows faculty and students from four rural school districts across Western New York indicated support for this emerging and viable school intervention. This qualitative and quantitative insight can help guide future research. 相似文献
56.
Reasoning about complex probabilistic concepts in childhood 总被引:2,自引:0,他引:2
The competencies of children, particularly their understanding of the more complex probabilistic concepts, have not been thoroughly investigated. In the present study participants were required to choose the more likely of two events, a single event, and a joint event (conjunctive or disjunctive). It was predicted that the operation of the representativeness heuristic would result in erroneous judgements when children compared an unlikely component event with a likely-unlikely conjunction (the conjunction fallacy) and when a likely component event was compared to a likely-unlikely disjunction. The results supported the first prediction with both older children aged between 9 and 10 years and younger children aged between 4 and 5 committing the conjunction fallacy. However, the second prediction was not confirmed. It is proposed that the basis of representativeness judgements may differ between the conjunctive and disjunctive cases with absolute frequency information possibly playing a differential role. 相似文献
57.
The relation between APOE status and neuropsychological memory test performance: an analysis of the Canadian Study of Health and Aging 总被引:2,自引:0,他引:2
This study examined the relationship between two risk factors for dementia, the apolipoprotein (APOE) epsilon4 allele and poor memory test performance. Participants were from the Canadian Study of Health and Aging, a 4-year longitudinal population-based study. Persons with no cognitive impairment who had an epsilon4 allele but whose memory was average or better were not at increased risk of developing dementia after five years. Risk was increased for those with below average memory and no epsilon4 allele, but was particularly increased for those with below average memory and an epsilon4 allele. While the APOE epsilon4 allele was associated with slightly lower memory test performance for persons without cognitive impairment at baseline, it only increased their risk of developing dementia if their memory was below average. 相似文献
58.
A Web-based medication screening tool that provides researchers with information about side effects associated with medications commonly used by older participants is described. This tool can be used for research purposes to better separate the effects of normal, healthy aging processes from the deleterious effects often associated with medication usage. Researchers can use this tool, called SMART (Screening Medications: Aging Research Taxonomy), to (a) obtain information pertaining to the cognitive, sensory, and motor side effects associated with specific medications and (b) screen medications in their research for side effect severity. The Web address for the tool is www.psychology.gatech.edu/SMART 相似文献
59.
This study examines paranormal believers' susceptibility to the conjunction fallacy for confirmatory versus non‐confirmatory conjunctive events. Members of the UK public (N = 207) read 16 hypothetical vignettes before judging the likelihood that each constituent and their conjunction would (co) occur. Event type (paranormal versus non‐paranormal), outcome type (confirming versus disconfirming) and level of paranormal belief (in either extrasensory perception, psychokinesis or life after death)—plus relevant interaction terms—were entered into a linear mixed model analysis. As hypothesised, paranormal belief was associated with more conjunction errors regardless of event type with, in general, more errors made for confirmatory over disconfirmatory conjunctions. These trends existed for extrasensory perception and psychokinesis believers with those for life after death believers approaching significance. Consistent with Crupi and Tentori's Confirmation–Theoretical Framework, current findings suggest that paranormal believers are prone to a generic and confirmatory conjunction fallacy. Theoretical implications, methodological limitations and future research ideas are discussed. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
60.