The debate about human behavior and personality has interested me for many years. While theories of Personality are rampant, most fall within the parameters of 3 distinct categories: 1): Intrapsychic explanations which applies concepts of psychological processes and "structures" within the mind. It focuses more on the contents of the mind, e.g. particular desires, thoughts and emotions, but it typically explains more complicated structures as "defense mechanisms", ""complexes" etc. 2): The second approach focuses on the individual also, but relies on the physiology of the brain rather than mental processes. 3): This approach focuses on environment (or the situation) of the individual as the source to explain human behavior. This theory comprises "Simple learning theory" and a "Social learning theory", et al. It still boils down to "Nature vs. Nurture". I'd be interested in your opinions on whether behaviors are "learned" or "inborn".