In this paper, a fuzzy analytical hierarchy process (FAHP) model was proposed in a qualitative and quantitative way to explore individual behavioral factors affecting personal performance. Causal factors or portfolio of causes affecting individual behavior were indentified by using retrospective analysis method first. Then an individual behavior hierarchical diagnostic model was established based on human cognitive model, combined with FAHP method to explore the most important factors affecting individual behavior, rank them, and get the weig...