中文摘要：

通过对198对直接领导和员工的实证研究，探讨了心理资本及希望、乐观和坚韧性三种积极心理状态与员工的工作绩效、组织承诺和组织公民行为之间的关系。结果表明：在控制了性别和年龄两个人口统计学变量的效应后，员工的希望、乐观和坚韧性三种积极心理状态，都对他们的工作绩效、组织承诺和组织公民行为有积极影响；员工的希望、乐观和坚韧性三者合并而成的心理资本，对他们的工作绩效、组织承诺和组织公民行为有积极影响。

英文摘要：

In the light of the emerging literature on positive psychology and positive organizational behavior （POB）, psychological capital can be defined as an individual＇s positive psychological state of development, which consists of four dimensions： self- efficacy/confidence, hope, optimism, and resiliency. Psychological capital may have positive effects on both performance and work attitudes. To date, a few empirical studies have found positive relationships between psychological capital and performance, job satisfaction, and organizational commitment, but these studies were conducted mainly in the USA, except the study of Luthans et al （2005）, and no research so far has ever dealt with the relationship between psychological capital and OCB. To fill in the gap in the literature, this study explored the impact of psychological capital on Chinese workers＇ performance, organizational commitment, and OCB. The main research hypothesis of this study was hope, optimism, and resiliency, respectively, and when combined them into a core construct of psychological capital, would positively related to Chinese workers＇job performance, organizational commitment, and OCB. The sampling procedures of the study involved three steps. First, we chose 67 supervisors from the supervisor name lists provided by the human resource managers of the four coal companies we visited. For each supervisor, we randomly sampled two to three subordinates. After that, the HR manager, along with one of the researchers of the current study, gathered the supervisors in several groups, to explain the purpose and requirements of the study. Each supervisor was given two questionnaires, one for himself/herself to complete （for each subordinate） and the other one for each of the selected subordinates to complete （for themselves）. All the questionnaires used in the current study have been tested to be reliable and valid in the Chinese context. We put a matched code numbers on both the subordinate and the supervisor questionnaires. Lastly,