a determination of the Main Character's mental operating system
Much of what we are as individuals is learned behavior. Yet the basic operating system of the mind is cast biologically before birth. Talents, intellectual capacity, instincts -- all of these are not learned but inherited. Among these traits are those specific to females and others specific to males. To be sure, we can go a long way toward balancing out those traits yet that does not eliminate them nor diminish their impact. In dealing with the psychology of a Main Character, it is essential to understand upon which foundation his experience rests and the technique he uses to resolve problems he encounters.