The aim of the study was to examine the evolution of players' perception of group variables (leadership, motivational climate, cohesion, and collective efficacy) and to determine whether the intercept and growth trajectory differed as a function of whether expectations have or have not been met in a sample of semi-professional Spanish football players. The results show that the levels of the variables (except for autocratic leadership and coach-created ego climate) decrease over the season. Furthermore, the mean scores of the “fully meets expectations” group were significantly higher in positive leader characteristics, coach-created task climate, cohesion and collective efficacy. Also, rates of decline were significantly greater in the “does not meet expectations” group. The results indicate the importance of establishing reachable expectations by coaches and players because to achieve or to miss the expected goals can affect psychological group dynamics.

该研究的目的是检查参与者对群体变量（领导力、动机气候、凝聚力和集体效能）的看法的演变，并确定截距和增长轨迹是否因预期是否存在而不同在一个半职业的西班牙足球运动员样本中相遇。结果表明，变量的水平（除了专制领导和教练创造的自我氛围）随着赛季的推移而下降。此外，“完全符合预期”组的平均得分在积极的领导特征、教练创造的任务氛围、凝聚力和集体效能方面明显更高。此外，“不符合预期”组的下降率明显更高。