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132.
ObjectivesThe purpose of this study was to examine the combined effects of external focus instructions and autonomy support on motor performance of children. In addition, we sought to provide evidence for an increased focus on the task goal under the external focus condition by using an inattentional blindness manipulation.DesignWithin-participant design.MethodThirty-six children (mean age = 8.5 ± 1.3 years) were asked to perform a bowling task with their dominant hand. Each participant performed 8 trials under external focus (path of the ball), internal focus (hand), or control conditions. In each attentional focus condition, they performed half of the trials under a choice (autonomy support) condition, in which they were able to choose among 4 bowling balls, and a no-choice condition (white ball).ResultsThe external focus instruction resulted in greater bowling accuracy (i.e., more pins knocked down) than internal focus and no instructions (control). Furthermore, choice resulted in more effective performance than no choice. Thus, both factors had additive benefits for performance. There was some evidence for an increased task focus in the external condition.ConclusionsThe present results show that, within the same individuals, instructions to adopt an external focus and the provision of a small choice contributed independently to enhance motor performance in children.  相似文献   
133.
ObjectivesAccording to the OPTIMAL theory of motor learning (Wulf & Lewthwaite, 2016), autonomy support contributes to successful performance and learning in part by enhancing learners' expectancies. The present study was designed to test expectancy-related predictions. Specifically, we examined the effects of practice with autonomy support on learners’ self-efficacy, positive affect, and thoughts during practice.DesignExperimental study with two groups. Movement form was assessed in two different experimental phases, supplemented by questionnaire data.MethodTen-year old children were shown a sequence of 5 ballet positions they were asked to learn: Preparatory position, demi plié, tendu with arms and legs in second position, passé with arms in first position, and elevé with feet in first position. In the autonomy-support (AS) group, participants were able to choose video demonstrations throughout practice, while control (C) group participants were provided with demonstrations based on their yoked counterparts’ choices. One day after practice, participants performed in a retention test.ResultsThe AS group demonstrated greater improvements in movement form during practice and enhanced learning relative to the C group. Furthermore, AS participants had higher self-efficacy and greater positive affect than the C group. Also, AS participants reported having more positive thoughts during practice relative to C group participants, who reported more negative and self-related thoughts.ConclusionsThe present findings are in line with OPTIMAL theory predictions. They highlight the motivational underpinnings of the learning benefits that are seen when learners are given choices.  相似文献   
134.
Research showing how upward social comparison breeds competitive behavior has so far conflated local comparisons in task performance (e.g. a test score) with comparisons on a more general scale (i.e. an underlying skill). Using a ranking methodology ( Garcia, Tor, & Gonzalez, 2006) to separate task and scale comparisons, Studies 1–2 reveal that an upward comparison on the scale (e.g. being surpassed in rank), rather than in the mere task (e.g., being outperformed), is necessary to generate competition among rivals proximate to a standard (e.g. ranked #3 vs. 4, near “the top”); rivals far from a standard (e.g. ranked #203 vs. 204), on the other hand, still tend to cooperate. Study 3 illustrates this finding with player trades in Major League Baseball. Study 4 further shows how an implicit scale comparison, instead of the commonly assumed explicit task comparison, may account for those classical competition findings in the literature. Study 5 then reveals how scale ranking becomes all important in the proximity of a standard, leading rivals to tolerate even an upward scale comparison to increase their proximity to the standard. Implications for the increasingly popular “forced ranking” management systems (e.g., at General Electric) are also discussed.  相似文献   
135.
Pigeons responded in a successive-encounters procedure that consisted of a search state, a choice state, and a handling state. The search state was either a fixed-interval or mixed-interval schedule presented on the center key of a three-key chamber. Upon completion of the search state, the choice state was presented, in which the center key was off and the two side keys were lit. A pigeon could either accept a delay followed by food (by pecking the right key) or reject this option and return to the search state (by pecking the left key). During the choice state, a red right key represented the long alternative (a long handling delay followed by food), and a green right key represented the short alternative (a short handling delay followed by food). In some conditions, both the short and long alternatives were fixed-time schedules, and in other conditions both were mixed-time schedules. Contrary to the predictions of both optimal foraging theory and delay-reduction theory, the percentage of trials on which pigeons accepted the long alternative depended on whether the search and handling schedules were fixed or mixed. They were more likely to accept the long alternative when the search states were fixed-interval rather than mixed-interval schedules, and more likely to reject the long alternative when the handling states were fixed-time rather than mixed-time schedules. This pattern of results was in qualitative agreement with the predictions of the hyperbolic-decay model, which states that the value of a reinforcer is inversely related to the delay between a choice response and reinforcer delivery.  相似文献   
136.
Recent studies have revealed that robust and replicable affective priming of naming responses can be obtained when pictures are used as primes and targets. The aim of the present research was to examine the predictive validity of affective priming effects that are obtained with the picture-picture naming task. In two studies that were modeled after [Karpinski, A., & Hilton, J. L. (2001). Attitudes and the Implicit Association Test. Journal of Personality and Social Psychology, 81, 774-778], we observed that individual difference scores that are obtained with the naming task exhibit good predictive validity. Both practical and theoretical implications of this finding are discussed.  相似文献   
137.
Across Europe, as governments turn to housing-led strategies in attempts to reverse rising rates of homelessness, increasing numbers of Housing First (HF) programs are being implemented. As HF programs become more widespread, it is important to understand how service users experience them compared to the more prevalent traditional treatment-first approach to addressing long-term homelessness. Although there is a large body of research on service users’ experiences of Housing First compared to treatment-first in North American contexts, comparatively less is known about how these two categories of homeless services are experienced in the European context. In a correlational and cross-sectional study, part of a larger examination of homelessness in Europe, participants (= 520) engaged with either HF (= 245) or traditional services (TS; = 275) programs in seven countries completed measures of their experiences of services (consumer choice, housing quality, and service satisfaction) and recovery (time in independent housing, psychiatric symptoms, and community integration). Across the seven countries, participants engaged with HF programs reported experiencing more consumer choice, better perceived housing quality, and more satisfaction with services than participants engaged in TS programs. Participants in HF programs also reported a greater proportion of time in independent accommodation, fewer psychiatric symptoms, and more community integration. Varying patterns of association between experiences of services and recovery outcomes were observed. Findings indicate HF consistently predicts greater recovery than TS across diverse sociopolitical and economic contexts. Implications of findings for configurations of homeless services and homeless services policy are discussed.  相似文献   
138.
Various factors can influence the choice of transportation mode such as the urban layout, land use and occupation patterns, and the services offer. In recent years, however, research studies have investigated the influence of psychological aspects on personal decision-making associated to modal choice, thereby contributing towards the elaboration of more sustainable public policies. This study investigates the beliefs that are subjacent to modal choices regarding school commute trips, based on the opinions of students attending a senior high school institution in Brasilia, Brazil. Using procedures suggested by the Theory of Planned Behavior (TPB) a set of beliefs was obtained by means of a focus group activity and used to support the elaboration of a School Trips Modal Choice Scale (STMCS). The scale was subjected to Principal Components Analysis to verify the consistency of factors related to the beliefs and the direct measurements of the TPB constructs. Following that Generalized Linear Models (GLM) were elaborated using the Quasi-likelihood estimation method to investigate the correlation between the beliefs obtained and the said constructs. In addition to identifying the principal beliefs related to the modal choice, the results showed that different TPB constructs can be correlated with the same belief and so attributing specific beliefs to each construct based on an initial intuitive classification can actually be an impediment to understanding them. Those findings regarding the beliefs identified as subjacent to each construct are specific for the school community that was studied. However the question of some beliefs significantly affecting more than one construct is a more generalizable and corroborates what has previously been verified in other contexts where TPB has been applied.  相似文献   
139.
This paper attempts to analyse in a critical way some essential aspects of the multiple-criteria decision aid (MCDA) methodology using modern epistemological instruments. Particular attention is paid to the problem of information precision and uncertainty and to the distinction considered essential between the concepts of choice and decision. Since it is maintained that the respect of subjectivity in decision aid is of fundamental importance, an analysis follows of the main approaches by which MCDA methods attempt to take the subjective component of the decision maker into account, indicating some characteristics which may be desirable in an MCDA model for this purpose.  相似文献   
140.
This paper is devoted to the multistage optimization problem with a vector-valued gain function. The notion of optimality is determined here by the choice function. The conditions for the choice function that guarantee the applicability and efficiency of dynamic programming are found.  相似文献   
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