Personality is the sum total of ways in which an individual reacts and interacts with others. Or Personality is generally defined as the deeply ingrained and relatively enduring patterns of thought, feeling, and behavior. In fact, when one refers to personality, it generally implies to all what is unique about an individual, the characteristics that makes one stand out in a crowd.
Personalities is the sum total of individual’s Psychological attitudes, beliefs, characteristics, habits, motives, outlooks and traits.
Heredity refers to those factors that were determined at conception. Physical structure, biological rhythms, facial attractiveness, temperament, gender, muscle composition and reflexes, energy level, and are characteristics that are generally considered to be either completely or substantially influenced by who your parents were, that is by their inherent psychological make up, physiological and biological.
The environmental factors that exert pressures on our personality formation are friends and social groups, the norms among our family, the culture in which we are raised, our early conditioning, and other influences that we experience. The environment to which we are exposed plays a substantial role in shaping our personalities.
A third factor, the situation, influences the effects of heredity and environment on personality. An individual’s personality although generally stable and consistent, does change in different situations. The demand of different situation calls forth different aspects of one’s personality. We should not therefore look upon personality patterns in isolation.