The term psychology has being derived from two Greek words 'Psyche' which means life and 'logos' which means explanation. Psychology as a social science scientifically studies the mind and behavior, which influences our day to day lives, professional well being and our relationship with family and society. Psychology as a social science has evolved a lot over several years and has widespread applications in clinical field, forensic field, counselling and psycho- therapy sessions for people who are distressed, research and observation for understanding certain behavior patterns and differences in personality, attitude or perception.

There are some major perspectives in psychology- Psycho-dynamic approach: The psycho-dynamic perspective: As per the psycho- dynamic approach, human behavior is the outcome of the role they played by various psychological forces and early childhood experiences. The theory lays a lot of stress on the dynamics of relationship between the unconscious or conscious mind and also asserts that behavior is an outcome of internal conflicts regarding which people have least awareness.

Determinism versus free will: This question is concern about up to what extent people can exercise control over their own behavior or actions. Psychologist have being concerned about understanding the influence of environmental factors on our behavior which is guided by those forces which is beyond our control or whether we choose our behavior in which we may want to indulge.