Introduction.
There are many different theories on personality. Diverse approaches focus on different aspects of speculation. Humanists and Existentialists are more apt to focus on the perceptive part. They believe that much of what we are is way too multifarious and embedded in history and culture to "predict and control." Behaviorists and Freudians, on the other hand, favor to talk about prediction and control. In other words if a thought is useful, if it works, go with it. Typically when we talk about someone's traits, we are talking about what makes that human being unlike other people, perhaps even unique. Some theories often spend substantial attention on things like types and behavior and tests with which we can classify or compare people: Some people are neurotic, others are not; some people are more introverted, others more extroverted; and so on.
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