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51.
Haddad JM Rietdyk S Ryu JH Seaman JM Silver TA Kalish JA Hughes CM 《Journal of motor behavior》2011,43(4):345-355
The authors examined postural asymmetries during quiet stance and while holding evenly or unevenly distributed loads. Right-hand dominant subjects preferentially loaded their right lower limb when holding no load or a load evenly distributed in both hands, but no differences in center of pressure (CoP) were observed between the left and right limbs. However, longer CoP displacement was observed under the preferentially loaded limb, which may reflect a functional asymmetry that allows quick movement of one limb in response to a potential perturbation. When a load was held only in the nondominant hand, sample entropy decreased in the left (loaded) limb but increased in the right (unloaded) limb, suggesting the unloaded foot compensated for a loss of control flexibility in the loaded foot. 相似文献
52.
This study uses Bandura's Multidimensional Scales of Perceived Self-Efficacy (MSPSE; Bandura, 1990) and Harter's Self-Perception Profile for Adolescents (SPPA; Harter, 1988) to examine the extent to which self-efficacy and competency-related elements of the self-concept are independent constructs. Factor analysis of data provided by 778 high school students revealed that when measured using domain-general measures such as the MSPSE and SPPA, self-efficacy and competency self-concept do not represent totally separate, distinct constructs. Overlap of dimensions occurs at both the first- and second-order levels of analysis. The practical and theoretical implications of these findings are discussed. 相似文献
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In two experiments, we examined the impact of the degree of match between sequential auditory perceptual organization processes
and the demands of a short-term memory task (memory for order vs. item information). When a spoken sequence of digits was
presented so as to promote its perceptual partitioning into two distinct streams by conveying it in alternating female (F)
and male (M) voices (FMFMFMFM)—thereby disturbing the perception of true temporal order—recall of item order was greatly impaired
(as compared to recall of item identity). Moreover, an order error type consistent with the formation of voice-based streams
was committed more quickly in the alternating-voice condition (Exp. 1). In contrast, when the perceptual organization of the
sequence mapped well onto an optimal two-group serial rehearsal strategy—by presenting the two voices in discrete clusters
(FFFFMMMM)—order, but not item, recall was enhanced (Exp. 2). The results are consistent with the view that the degree of
compatibility between perceptual and deliberate sequencing processes is a key determinant of serial short-term memory performance.
Alternative accounts of talker variability effects in short-term memory, based on the concept of a dedicated phonological
short-term store and a capacity-limited focus of attention, are also reviewed. 相似文献
55.
Gondan M Blurton SP Hughes F Greenlee MW 《Journal of experimental psychology. Human perception and performance》2011,37(6):1887-1897
When participants respond to auditory and visual stimuli, responses to audiovisual stimuli are substantially faster than to unimodal stimuli (redundant signals effect, RSE). In such tasks, the RSE is usually higher than probability summation predicts, suggestive of specific integration mechanisms underlying the RSE. We investigated the role of spatial and selective attention on the RSE in audiovisual redundant signals tasks. In Experiment 1, stimuli were presented either centrally (narrow attentional focus) or at 1 of 3 unpredictable locations (wide focus). The RSE was accurately described by a coactivation model assuming linear superposition of modality-specific activation. Effects of spatial attention were explained by a shift of the evidence criterion. In Experiment 2, stimuli were presented at 3 locations; participants had to respond either to all signals regardless of location (simple response task) or to central stimuli only (selective attention task). The RSE was consistent with task-specific coactivation models; accumulation of evidence, however, differed between the 2 tasks. 相似文献
56.
Lisa Henderson Anna Powell M. Gareth Gaskell Courtenay Norbury 《Developmental science》2014,17(6):858-871
Autism spectrum disorder (ASD) is characterized by rich heterogeneity in vocabulary knowledge and word knowledge that is not well accounted for by current cognitive theories. This study examines whether individual differences in vocabulary knowledge in ASD might be partly explained by a difficulty with consolidating newly learned spoken words and/or integrating them with existing knowledge. Nineteen boys with ASD and 19 typically developing (TD) boys matched on age and vocabulary knowledge showed similar improvements in recognition and recall of novel words (e.g. ‘biscal’) 24 hours after training, suggesting an intact ability to consolidate explicit knowledge of new spoken word forms. TD children showed competition effects for existing neighbors (e.g. ‘biscuit’) after 24 hours, suggesting that the new words had been integrated with existing knowledge over time. In contrast, children with ASD showed immediate competition effects that were not significant after 24 hours, suggesting a qualitative difference in the time course of lexical integration. These results are considered from the perspective of the dual‐memory systems framework. 相似文献
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58.
Gallagher Christopher M. Hughes Ian M. Keith Melissa G. 《Journal of business and psychology》2022,37(4):675-694
Journal of Business and Psychology - Receiving social support is widely considered a positive workplace phenomenon, but what about the employees from whom the support is being sought? Following... 相似文献
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Jolene van der Kaap-Deeder Jan De Houwer Sean Hughes Adriaan Spruyt Maarten Vansteenkiste 《Motivation and emotion》2018,42(5):615-637
Research on self-determination theory has typically relied on explicit measures when examining the concept of competence need satisfaction. As a result, we know relatively little about competence need satisfaction that arises under conditions of automaticity. Across four studies, we developed and validated implicit measures of competence need satisfaction by drawing on two tasks: a relational variant of the implicit association test (IAT; Study 1, 3, and 4) and the implicit relational assessment procedure (IRAP; Study 2–3). Results across these studies revealed that both implicit measures were either unrelated or moderately related to their explicit counterpart. They were also unrelated to one another. Unlike the IRAP, the IAT was found to be reliable, to display discriminant validity, and to yield meaningful but modest relations with constructs in a nomological network. Together, these results provide modest support for the usefulness of the competence need satisfaction IAT but not of the competence need satisfaction IRAP as an implicit measure of the need for competence. Future research examining the unique predictive value of this IAT is needed, together with research on possible explanations for the low reliability of the IRAP. 相似文献