The focus of this study was on developing a theoretical framework of imagination stimulation to: (1) examine the effects of personality, psychological and environmental variables on the imagination of university students, (2) analyze the predictive relationships between these identified variables; and (3) test the mediator effect resulting from the variables of both intrinsic motivation and inspiration through action. 943 film majors from eight universities across Taiwan served as research subjects. The findings of this study provided empirical evidence to support the indicators of imaginative capabilities, psychological influence, and environmental influence. The hypothesis of the study-that the variables of both intrinsic motivation and inspiration through action mediate the effects of personality, psychological and environmental predictors, and both types of imagination-was partially supported. The structural model also showed that most personality traits had direct effects on imagination, while most psychological and environmental predictors had indirect effects.