中文摘要：

心理契约的演化因外界扰动的影响而表现为随机系统，同时展现出了非线性突变特征，因此利用随机尖点突变理论来分析心理契约离散变化即建立一破坏的突变机制．将人格和组织氛围作为控制变量、心理契约作为状态变量，利用Cuspfit软件拟合了实际数据．分析得出如下结论：1）组织氛围作为正则变量、人格作为分歧变量共同影响心理契约的突变；2）心理契约存在两类不同的离散变化，扰动性突跳和结构性突变；3）当参数在分歧集合内时，心理契约因外界随机干扰而发生扰动性突跳，当参数穿过分歧集合边界时，心理契约由于自组织的作用发生结构性突变；4）滞后现象说明了心理契约一旦破坏，就很难重新建立．

英文摘要：

The evolutionary dynamics of psychological contract is characterized by uncertainty, nonlinearity, and catastrophes, thus it is modeled by stochastic cusp catastrophe theory to analyze the dynamics of fulfill- ment--breach on psychological contract. A behavioral variable （i. e. , perception of psychological contract） and independent control variables （i. e. , personality and organizational context） are introduced. This paper is the first attempt to fit a cusp catastrophe model to the data by cuspfit software. The conclusions are that： 1 ） The organizational context, as a normal factor, and personality, as a splitting factor, play important roles in the catastrophe of psychological contract simultaneously; 2） There are two different kinds of discrete changes on psychological contract： turbulent sudden jumps and structural catastrophes; 3 ） There exist turbulent sud- den jumps because of external disturbance when the control variables are in the bifurcation set, while structur- al catastrophes will result from self-organization when they cross the border of the bifurcation set ; 4） The exist- ence of hysteresis can explain why a psychological contract could not be easily repaired once it breaches.