1. A computer-assisted method for simulating the effect of mental state on character behavior in an interactive story environment, the method comprising: facilitating manipulation of a simulated mental state model of a character in the interactive story, the simulated mental state model comprising at least one pre-behavior representation associated with at least one character behavior including at least one of a thought, verbal expression, or action; and, applying the manipulated mental state model to generate at least one behavior of the character in the interactive story.