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201.
Integrating theories of self-regulation with team and leadership literatures, this study investigated goal and process clarity and servant leadership as 3 antecedents of team potency and subsequent team effectiveness, operationalized as team performance and organizational citizenship behavior. Our sample of 304 employees represented 71 teams in 5 banks. Results showed that team-level goal and process clarity as well as team servant leadership served as 3 antecedents of team potency and subsequent team performance and team organizational citizenship behavior. Furthermore, we found that servant leadership moderated the relationships between both goal and process clarity and team potency, such that the positive relationships between both goal and process clarity and team potency were stronger in the presence of servant leadership. 相似文献
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Xiao L Bechara A Palmer PH Trinidad DR Wei Y Jia Y Johnson CA 《Personality and individual differences》2011,51(3):285-292
The goal of this study was to investigate how parents’ engagement of their child in everyday decision-making influenced their adolescent’s development on two neuropsychological functions, namely, affective decision-making and working memory, and its effect on adolescent binge-drinking behavior.We conducted a longitudinal study of 192 Chinese adolescents. In 10th grade, the adolescents were tested for their affective decision-making ability using the Iowa Gambling Task (IGT) and working memory capacity using the Self-ordered Pointing Test (SOPT). Questionnaires were used to assess perceived parent-child engagement in decision-making, academic performance and drinking behavior. At one-year follow-up, the same neuropsychological tasks and questionnaires were repeated.Results indicate that working memory and academic performance were uninfluenced by parent-child engagement in decision-making. However, compared to adolescents whose parents made solitary decisions for them, adolescents engaged in everyday decision-making showed significant improvement on affective decision capacity and significantly less binge-drinking one year later.These findings suggest that parental engagement of children in everyday decision-making might foster the development of neurocognitive functioning relative to affective decision-making and reduce adolescent substance use behaviors. 相似文献
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大鼠脑反复缺血致不可逆性学习记忆障碍的研究 总被引:43,自引:0,他引:43
大鼠全脑反复缺血后产生不可逆性学习记忆障碍的研究,采用4血管阻断的方法,脑反复缺血再灌流,然后长期饲养。作水迷宫试验和跳台试验,结果显示缺血后出现了显著的、不可逆的学习记忆障碍。同时用放射免疫方法测定了额叶、颞叶、纹状体、丘脑、海马、Meynert氏核中胆碱递质和AVP,发现ACh、ChAT、AVP含量显著下降。下降的时间、幅度一致,变化呈正相关。ACh、ChAT、AVP是与学习、记忆密切相关的神经递质和神经肽。因而推断脑缺血后出现不可逆性学习记忆障碍与多脑区内ACh、ChAT、AVP含量显著下降有关。这对探讨临床上血管性痴呆发病机理进而开发有效的防治药物有重要意义。 相似文献
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It is currently unclear whether it is the need to maintain metabolic efficiency, the need to keep skeletal loading below critical force levels, or simple mechanical factors that drive the walk-to-run (W-R) and run-to-walk (R-W) transitions in human gait. Eighteen adults (9 males and 9 females) locomoted on an instrumented treadmill using their preferred gait. Each completed 2 ascending (W-R) and 2 descending (R-W) series of trials under three levels of loading (0%, 15% and 30% body weight). For each trial, participants locomoted for 60 s at each of 9 different speeds--4 speeds both above and below their preferred transition speed (PTS) plus their PTS. Evidence was sought for critical levels of key kinetic (maximum vertical force, impulse, first peak force, time to first peak force and maximum loading rate), energetic (oxygen consumption, transport cost) and mechanical variables (limb lengths, strength) predictive of the gait transition. Analyses suggested the kinetic variables of time to first peak force and loading rate as the most likely determinants of the W-R and R-W transitions. 相似文献
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Cao Yuan Diao Wei Tian Fangfang Zhang Feifei He Laichang Long Xipeng Zhou Fuqinq Jia Zhiyun 《Neuropsychology review》2021,31(4):703-720
Neuropsychology Review - Gray matter atrophy in multiple sclerosis (MS) is thought to be associated with disability and cognitive impairment, but previous studies have sometimes had discordant... 相似文献