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41.
An important question in the field of imitation is what information is used for movement reproduction. While it is argued that relative motion information is perceived and minimised, direct evidence is lacking. In this experiment relative motion was manipulated to convey a novel kicking action. Twenty-four adults were assigned to one of the three impoverished relative motion display groups showing only the TOE, FOOT or LEG. After practise with partial information, participants watched a full-body display and in a final condition performed the action with an additional context constraint (i.e., a ball). Movement kinematics were collected and difference scores between participants and the model were analysed. The groups did not differ in terms of knee-ankle coordination. For hip-knee, the TOE group performed more like the model than the FOOT and LEG group. When transferred to the full-body display, there were no significant improvements. End-point trajectory information can provide sufficient information to reproduce key characteristics of the movement form. 相似文献
42.
Hodges NJ Kerr T Starkes JL Weir PL Nananidou A 《Journal of experimental psychology. Applied》2004,10(4):219-237
In Studies 1 and 2, the authors evaluated deliberate practice theory through analyses of the relationship between practice and performance for 2 populations of athletes: triathletes and swimmers, respectively. In Study 3, the authors obtained evaluations of practice from athletes' diaries. Across athletes, length of time involved in fitness activities was not related to performance. For the triathletes, a significant percentage of variance in performance was captured by practice. This was not so for sprint events for the swimmers, in which gender was a significant predictor. In the diaries, physical activities were perceived as enjoyable. In contrast to the results obtained from questionnaires, enjoyment did not covary with an activity's relevance to improving performance. Although these findings highlight the importance of sport-specific practice, the authors question a domain-independent account of expertise based on deliberate practice. 相似文献
43.
We investigated the relationship between scores on the Child and Adolescent Functional Assessment Scale (CAFAS) and several indicators of functioning assessed in the national evaluation of the demonstration grants funded by the Center for Mental Health Services System of Care Initiative. The sample included 3187 youths, ranging in age from 4 to 23, with serious emotional disturbance (SED) who were evaluated at intake. At 6 month post-intake, 873 of these youths were re-evaluated. As predicted, higher CAFAS scores were associated with previous psychiatric hospitalization, more serious psychiatric diagnoses, and more restrictive living arrangements. Youths in residential inpatient settings were significantly more impaired than youths living in their own home or in regular foster care. Below average school performance, poor attendance, and contact with law enforcement personnel were also associated with greater impairment. Youth's total CAFAS scores decreased significantly from intake to 6 months. These results indicate that the CAFAS is a measure of functioning which has both statistical and clinical significance. 相似文献
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Sex differences in attribution of causality are investigated in three types of television programs: prime-time family, violent, and daytime serial shows. Both frequency and type of causal statements were studied, using DeCharm's conceptualization of personal causation as origin-like (internal to the self) or pawn-like (external to the self). There were striking sex differences in violent programs, with males modeling more origin behavior and females modeling more pawn behavior. In soap operas there were no sex differences, but both origin and pawn ideas were expressed in terms of personal responsibility, with fewer references to more competent origin behaviors such as goal setting, planned decision making, or self-confidence. These findings have implications for differential socialization of competent coping skills for males and females.The authors would like to express appreciation to Katie Henry and Jennifer Mardoyan, who assisted with this research. 相似文献
46.
Four groups learnt a novel bimanual coordination movement pattern under instructions designed to manipulate focus of attention. It was predicted that instructions directing attention onto the effects of the action would facilitate learning. Three groups received demonstrations of the required 90° relative phase movement. Two of the demonstration groups also received instruction directing attention either towards the feedback (EXTERNAL), or the relationship between their arm movements and the feedback (RELATION). The third group received no attention directing instructions (DEMO). A final group was only provided with goal relevant feedback (NO DEMO). A scanning task enabled coordination bias to be assessed pre-practice. This was conducted to ensure task novelty and assign participants equally across groups based on strength of bias to in- and/or anti-phase. Acquisition rate was slower for the DEMO only group, especially compared to the EXTERNAL group. Additionally, participants biased to in-phase (as compared to anti-phase) during the scanning trial also showed high error early in practice. These differences remained in retention. Irrespective of feedback condition the DEMO group evidenced the most error in retention. However, all groups were affected by the removal of on-line feedback, although the attention-directing instructions provided during practice somewhat decreased the negative effects associated with feedback removal. Overall, the in-phase-biased participants were most affected by withdrawal of feedback. It was concluded that movement demonstrations alone do not facilitate learning of a novel coordination task, unless additional goal-directed instruction is provided. Additionally, individual differences in coordination bias pre-practice can be used to predict learning rate and quality. 相似文献
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This paper describes the use of a theory of change approach to community-based cross-agency service planning for children with serious emotional disturbance and their families. Public agency planners in Contra Costa County, California used the theory of change approach to organize service planning for a population of youth who had been arrested and involved with juvenile probation. The theory of change process described in this paper links community outcomes with planned activities with the assumptions or principles that underlie the community planning efforts. When complete, a theory of change logic model can serve as a guide for implementation, ensuring that community plans for service delivery remain true to their intent. The theory of change development process includes twelve stages and is based on a step-by-step approach. Theory of change logic models establish a context for articulating a community's shared beliefs and prompt local stakeholders to establish logical connections between the population to be served, expected results, and strategies intended to achieve those results. 相似文献
50.
Michael P. Hodges 《Philosophical Studies》1972,23(1-2):105-110