Jamal was born with genes to be a professional athlete, but his environmental experiences never supported the development of his potential athletic ability, so he never became a professional athlete. This example illustrates the concept of a trait being:.

Fictional characters behave according to the same psychological probabilities as real people. but the characters of fiction are found in exotic dilemmas that real people hardly encounter. consequently, fiction provides us with the opportunity to ponder how people react in uncommon situations, and to deduce moral lessons, psychological principles, and philosophical insights from their behavior.