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341.
Speech priming tasks are frequently used to delineate stages in the speech process such as lexical retrieval and motor programming.
These tasks, often measured in reaction time (RT), require fast and accurate responses, reflecting maximized participant performance,
to result in robust priming effects. Encouraging speed and accuracy in responding can take many forms, including verbal instructions
and feedback, and often involves visually displayed RT feedback. However, it is uncertain how manipulation of the schedule
of this RT feedback influences speech RT speed and, ultimately, the priming effect. This experiment examined the effect of
visually presented RT feedback schedules on priming patterns in 20 older healthy adults. Results suggested that feedback schedule
manipulation had a differential effect on reaction time, depending on the interstimulus interval between the prime and the
target, but no effect on response priming patterns. 相似文献
342.
Brandon Hunt Jodi Jaques Spencer G. Niles Edward Wierzalis 《Journal of counseling and development : JCD》2003,81(1):55-60
The purpose of this study was to identify the career concerns of people living with HIV/AIDS. The authors used qualitative research methodology to ask participants to discuss the impact their diagnosis has had on their career development concerns and their career goals. Based on participants' interview responses, the authors classified their concerns as relating to career or workplace issues, medical issues, or coping resources. Career counseling implications for each category are discussed. 相似文献
343.
344.
In the present report, we describe a new dynamic field theory that captures the dynamics of visuo-spatial cognition. This theory grew out of the dynamic systems approach to motor control and development, and is grounded in neural principles. The initial application of dynamic field theory to issues in visuo-spatial cognition extended concepts of the motor approach to decision making in a sensori-motor context, and, more recently, to the dynamics of spatial cognition. Here we extend these concepts still further to address topics in visual cognition, including visual working memory for non-spatial object properties, the processes that underlie change detection, and the ‘binding problem’ in vision. In each case, we demonstrate that the general principles of the dynamic field approach can unify findings in the literature and generate novel predictions. We contend that the application of these concepts to visual cognition avoids the pitfalls of reductionist approaches in cognitive science, and points toward a formal integration of brains, bodies, and behavior. 相似文献
345.
Older (mean age = 74.23) and younger (mean age = 33.50) participants recalled items from 6 briefly exposed household scenes either alone or with their spouses. Collaborative recall was compared with the pooled, nonredundant recall of spouses remembering alone (nominal groups). The authors examined hits, self-generated false memories, and false memories produced by another person's (actually a computer program's) misleading recollections. Older adults reported fewer hits and more self-generated false memories than younger adults. Relative to nominal groups, older and younger collaborating groups reported fewer hits and fewer self-generated false memories. Collaboration also reduced older people's computer-initiated false memories. The memory conversations in the collaborative groups were analyzed for evidence that collaboration inhibits the production of errors and/or promotes quality control processes that detect and eliminate errors. Only older adults inhibited the production of wrong answers, but both age groups eliminated errors during their discussions. The partners played an important role in helping rememberers discard false memories in older and younger couples. The results support the use of collaboration to reduce false recall in both younger and older adults. 相似文献
346.
Phonological processing was examined in school-age children who stutter (CWS) by assessing their performance and recording event-related brain potentials (ERPs) in a visual rhyming task. CWS had lower accuracy on rhyming judgments, but the cognitive processes that mediate the comparisons of the phonological representations of words, as indexed by the rhyming effect (RE) ERP, were similar for the stuttering and normally fluent groups. Thus the lower behavioral accuracy of rhyming judgments by the CWS could not be attributed to that particular stage of processing. Instead, the neural functions for processes preceding the RE, indexed by the N400 and CNV elicited by the primes and the N400 elicited by the targets, suggest atypical processing that may have resulted in less efficient, less accurate rhyming judgment for the CWS. Based on the present results, it seems likely that the neural processes related to phonological rehearsal and target word anticipation, as indexed by the CNV, are distinctive for CWS at this age. Further, it is likely that the relative contributions of the left and right hemispheres differ in CWS in the stage of processing when linguistic integration occurs, as indexed by the N400. Taken together, these results suggest that CWS may be less able to form and retain a stable neural representation of the prime onset and rime as they anticipate the target presentation, which may lead to lower rhyming judgment accuracy. 相似文献
347.
The crucial premise of the standard argument for two‐boxing in Newcomb's problem, a causal dominance principle, is false. We present some counterexamples. We then offer a metaethical explanation for why the counterexamples arise. Our explanation reveals a new and superior argument for two‐boxing, one that eschews the causal dominance principle in favor of a principle linking rational choice to guidance and actual value maximization. 相似文献
348.
Because negative emotional memories are often disruptive, we conducted two experiments to reduce these memories by using a retroactive interference (RI) paradigm. In both experiments, participants were presented with highly negative pictures (List 1) followed by highly negative, moderately negative, or neutral pictures (List 2) or a rest period. Then, following a filler task, participants took a surprise free recall test, recalling pictures from List 1 in Experiment 1 and from both List 1 and List 2 in Experiment 2. In both experiments, recall of List 1 was reduced by List 2, indicating that RI was present. Furthermore, in Experiment 1, RI was similar between moderately negative and highly negative List 2 whereas in Experiment 2, RI was greater for highly negative List 2 than moderately negative List 2. These results showed that RI can be used to reduce negative emotional memories by making these memories inaccessible. 相似文献
349.
The study assessed perceptions of breast cancer genetic counseling. Focus groups were conducted with twenty women (ages < = 50 years)
in a Midwestern, urban health system identified as at above average risk of developing hereditary breast cancer and referred
for breast cancer genetic counseling following mammography. All participants associated the words “breast cancer” with fear.
African American women who received breast cancer genetic counseling may have channeled their fear into increased vigilance
related to breast health. African American women who did not receive breast cancer genetic counseling were most knowledgeable
about it. In contrast, Caucasian women who did not receive it reported uncertainty about the role of genetic counseling and
testing in assessing breast cancer risk, mistrust in medical professionals, and lack of trust in the accuracy of genetic tests.
The results could be used to help develop interventions to improve informed decision-making regarding breast cancer genetic
counseling. 相似文献
350.
Sleep-dependent memory consolidation is observed following motor skill learning: Performance improvements are greater over a 12-h period containing sleep relative to an equivalent interval without sleep. Here we examined whether older adults exhibit sleep-dependent consolidation on a sequence learning task. Participants were trained on one of two sequence learning tasks. Performance was assessed after a 12-h break that included sleep and after a 12-h break that did not include sleep. Older and younger adults showed similar degrees of initial learning. However, performance of the older adults did not improve following sleep, providing evidence that sleep-dependent consolidation is diminished with age. 相似文献