The third lecture on ¡ÇPsychology and Physilogy for Human Interface¡Ç deals with integrated approach for modeling human information behavior at human-machine interface as computer simulation program in order to use it for vaious industrial purposes. The content of this lecture consists of three chapters; (1) Basic knowledge on human model, (2)Implementation technologies of human model as the computer simulation programs, and (3)Application of human models for industrial purposes and the future prospects.