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111.
Practice is one of the most important predictors of skill. To become an expert, performers must engage in practice for a prolonged time to develop the psychological characteristics necessary for outstanding performance. Deliberate practice (DP), that is focused repetitive activities with corrective feedback, is particularly beneficial for skill development. The amount of accumulated DP differentiates experts and novices. However, the predictive strength of DP weakens considerably when it comes to differentiating between differently skilled experts, leaving a way clear for other non-practice related factors to exercise their influence. In this paper, we demonstrate using a large sample (388) of elite youth soccer players that one such factor, the personality trait of grit, predicts expertise level both directly and indirectly. Grittier players accumulated more time in coach-led team practice, the activity, which is arguably closest to DP in team sports, which in turn predicted the skill level. Other practice activities, such as self-led training or playing with peers, were not predictive of skill level, neither were they influenced by grit. Grit, however, continued to exert a direct positive influence on the skill level of players even after accounting for the hours of DP accumulated. Overall, a standard deviation of change in the grit score resulted in at least a third of standard deviation improvement in skill. Our findings highlight the need for the inclusion of additional factors in theoretical frameworks in situations where the predictive power of traditional expertise factors, such as practice, is limited.  相似文献   
112.
BackgroundAppropriate availability of macro- and micronutrients has an important impact on cognitive performance, mood and mental health. Although the critical role of nutrition for elite athletes’ performance was recognized early on, little is known about whether consumption of specific macronutrients (carbohydrates, proteins, fat) predict the development of future depressive symptoms in adolescent elite athletes.MethodsParticipants were recruited from three Swiss Olympic Partner Schools (SOPS) in the Northwestern German speaking part of Switzerland. A total of 97 adolescent elite athletes (38% girls, Mage = 16.35 ± 1.19) participated in the study. Depressive symptoms (PHQ9) were assessed at baseline and after 10 months follow-up. A 3-day food recall was completed three months after the baseline assessment. Linear regression analyses were used to examine whether macronutrients predict depression symptom severity after controlling for covariates and baseline depressive symptoms.ResultsHigher protein consumption in athletes was a prospective predictor of lower depressive symptom severity at follow-up (β = −35, p < .05). Several deviations from recommended nutritional standards were observed in elite athletes.ConclusionsThe findings of this exploratory study support the notion that dietary behaviour may be prospectively associated with athletes’ mental health. However, more research is required with larger samples and more in-depth assessment techniques. Future research should also examine whether nutrition education and dietary modification can be used to prevent depressive symptoms among adolescent elite athletes.  相似文献   
113.
This study explored the relationships between athletes’ experiences of maltreatment and mental health indicators. Canadian National Team athletes completed an online, anonymous survey that assessed reported experiences of maltreatment (psychological, physical, sexual harm and neglect), and mental health indicators of well-being, eating disorders and self-harming behaviours. All forms of maltreatment had a significant, positive correlation with eating disorder and self-harming behaviours, and a negative correlation with well-being. The relationships between maltreatment and mental health indicators differed based on identity characteristics of the athletes. Further work is needed on the prevention and intervention of maltreatment in sport to reduce the behaviours associated with negative health outcomes.  相似文献   
114.
While child development is well-recognized as a complex process which could hardly be decomposed into separate lines or domains in contemporary psychological theories, the decomposition approach is widely used in empirical studies. Based on the cultural-historical theory, this study argues for adopting the unit of analysis as a way to bridge this gap, and finds “role adjustment” as a suitable unit to analyse child development during the transition to school. The case of a 5-year-old second-generation Chinese Australian child's transition to school (with a total of 34 h of observation and 5 h of interview) is presented to verify its feasibility and to illustrate how it could be achieved in a research practice. The case study demonstrates that a child's role adjustment is in essence a process of transforming his/her role system, during which his/her major roles, the relation of the major roles, as well as his/her role-taking patterns change as a whole, and by tracing a child's role adjustment trajectory, how the child is learning and developing, what difficulties he/she encounter, and why these difficulties appear become clear.  相似文献   
115.
ObjectivesThe purpose of this study was to assess the short effect of the modification of the players' number, field size, and goal size on the levels of physical self-efficacy, football-specific self-efficacy, and collective self-efficacy in male youth football players.DesignA quasi-experimental study of type A-B-A (three tournaments) was implemented to measure the effect of rule changes on the player's self-efficacy. The independent variable of the study was the competition format: official rules of the Royal Spanish Football Federation for U-12 vs. modified rules (size of the playing field (58 × 38 m. vs. 38 × 20 m); number of players per team on the field (8-a-side vs. 5-a-side); and goal size (6 × 2 m. vs. 3 × 2 m.). The dependent variables were physical self-efficacy, football-specific self-efficacy, and collective self-efficacy. The technical tactical players' actions of clearances, passes, and shots were measured as cofounding variables to assess the implication of the modification of the rules on the game.MethodThe sample analyzed was made up of four U-12 male football teams (n = 48), which played a total of 24 matches in three tournaments. In tournaments one and three, teams played with the official 8v8 football rules. In tournament two, teams played with the modified rules.ResultsThere was a significant increase in the football-specific self-efficacy at the third tournament. The experimental rules did not change players' general physical self-efficacy and collective self-efficacy. The experimental rules involved the realization of more defensive actions (clearances) and offensive actions (passes and shots) by players. The results showed that both competition rules involved similar values of self-efficacy.ConclusionsThese results show that the short-effect of participation in modified competitions maintains the values of football-specific self-efficacy and collective self-efficacy. Future studies should consider the interaction of self-efficacy with other psychological variables, such as self-esteem, cooperation motivation, etc., and other aspects of the game, such as technic-tactical, physiological, health, etc.  相似文献   
116.
Transition theory posits that autobiographical memories are organized by major life transitions, which is often supported by the Living-in-History effect that occurs when people frequently refer to public events to support their date estimates of personal events. In the present study, 52 Chinese older adults in Hong Kong recalled autobiographical events using cue-word method and justified the date estimates of the events. They also reported the most important events and assessed their impacts. Results showed that participants referred to public events only when estimating the date of 5.5% of word-cued events and reported a few public events as personally important, suggesting an absence of the Living-in-History effect. Nonetheless, word-cued events and important events accumulated around major life transitions to form a transition bump; the material change that important events brought about predicted whether the important events were used to organize autobiographical memory, thereby providing new evidence for the transition theory.  相似文献   
117.
There is limited understanding of the dynamic between relational and sexual well-being as couples adjust to new parenthood, despite this being a vulnerable period for couples' relationships. This study was aimed at examining the bidirectional links between relationship quality and sexual well-being (i.e., sexual satisfaction, sexual distress) across the transition to parenthood. We assessed new parent couples (N = 257) across four time points (two prenatal) from mid-pregnancy through 6 months postpartum. Parallel dyadic latent growth curve modeling was employed to examine the associations between trajectories of perceived relationship quality, sexual satisfaction, and sexual distress. New parents' declines in relationship quality were associated with declines in own and partners' sexual satisfaction and with increases in own sexual distress. Mothers' prenatal relationship quality and sexual distress predicted subsequent changes in own sexual distress and fathers' relationship quality, respectively. Results indicate that changes to new parents' relational and sexual well-being mutually influence each other over time. Current results indicate that the impact of the transition on couples' relationships is partly determined by own and partners' prenatal factors, to which clinicians and researchers can attend to early on. Cross-domain links between relational and sexual well-being should be considered in research and clinical practice.  相似文献   
118.
This longitudinal study examines the individual transition journeys of physicians as their private medical practices are acquired by a large integrated health care system. We test the proposition that transition patterns (trends in an individual's commitments to organization and profession over time) are a function of individual differences in years in profession and perceived organizational enabling characteristics (change involvement, openness to ideas, and work discretion). Three years of survey data were obtained from a panel of 48 physicians who transitioned through an organizational change process. Results challenge traditional assumptions that tenure reinforces commitment and cast doubt on the effectiveness of current medical school curricula in preparing medical graduates to practice in an administrative environment. In addition, results strongly suggest that enabling characteristics of organizational change are critical for compatibility between the organizational and professional attachments of transitioning physicians.  相似文献   
119.
We agree with almost all of the analysis in this excellent presentation of the molecular view of avoidance behavior. A few suggestions are made as follows: Referring to response-generated stimuli as 'readily observable" seems not quite right for the kinesthetic components of such stimuli, although their scientific legitimacy is not questioned. Interpreting response-generated stimuli as a form of positive reinforcement is contested, and an alternative interpretation is offered. A possibly simpler interpretation of the Sidman (1962) two-lever experiment is suggested. We question Dinsmoor's (2001) explanation for warning stimuli not being avoided, except for the reference to the weakness of third-order conditioning effects. A final question is raised regarding the nature of the variables that are responsible for the momentary evocation of the avoidance response.  相似文献   
120.
Dinsmoor's (2001) adherence to molecular analyses may require him to assert that molar and molecular principles are mutually exclusive, but to instead analyze the phenomena of avoidance as inherently multiscaled is to follow a well-established practice in the natural sciences. Besides the issue of scale, two-factor theory, which Dinsmoor advocates, has little to say about some important and longstanding results in experiments that qualify as avoidance.  相似文献   
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