This next subject is kind of an interesting one to me because it isn't about what is true but more on what a person/character believes. In a study conducted by Julian Rotter in 1966 he designed a scale that would evaluate how much a person believes he/she is in control of his/her fate. The scale was called the I-E Scale, I for internal and E for external. The closer the individual was to the I the more likely they felt like they had control over their fate. The closer an individual is to the E the more likely they felt they had little control of their fate.
"I" people tend to bet on sure things where as "E" people tend to be riskier. "I" more likely to influence the attitudes of others and less likely to be influenced, whereas the opposite was for "E" people. There was some support that "I" individuals have more self control than "E" people. Further, it was found that "I" individuals achieved more and are able to conform less.
It is worth noting three things that Rotter reported as possible reasons people become an "I" or an "E" individual: Socioeconomic Status, How the individual was parented and culture.
Characters will believe a certain way and if they believe they have control then they will act differently than if they don't feel that they have control. Also I feel that that belief can change in either direction. This will of course lead to stress which we talked about in the last post but it will also influence and change they way they react to situations.
Tidbit: I am the fourth child of seven.