Psychologists organize their findings concerning the various aspects of the behavior of living organisms. Then they classify the results of their studies into certain specific fields.

1. Abnormal psychology is the study of maladjustment's among mental, social-emotional deviates.

2. Adolescent psychology is the study of the behavior of individuals during the adolescent years, usually 12 to 20.

3. Adult psychology is concerned with the behavior of individuals after their period of adolescence.

4. Animal psychology is concerned with the nature and reactions of animals.

5. Applied psychology is a study of human reactions as related to problems in industry, business, law, medicine and other fields of society.

6. Business psychology deals with the behavior of consumers.

7. Child psychology is the study of human behavior from the prenatal period through the developing years up to early adolescence.

8. Clinical psychology is concerned with the diagnosis and evaluation of symptoms and record of events relevant to the condition of a person who has a problem. The treatment is done by three kinds of specialists who work in a clinic, mental hospital, institutions of the mentally retarded, or prisons. They are the psychiatrists, psychoanalysts, and clinical psychologists.

9. Comparative psychology is concerned with comparing the behavior of different species of animals.

10. Differential psychology is a branch of study which investigates differences and similarities existing between animals, social groups, and races.

11. Dynamic psychology is a scientific interpretation of mental phenomena emphasizing internal drives and motives as the cause of behavior.

12. Educational psychology is concerned with individual learning processes in schools, the psychological aspects of teaching for effective instruction.

13. Engineering psychology is concerned with seeking the relationship between people and machines, to design these machines so that human errors are minimized.

14. Environmental psychology is concerned with environmental issues - problems of noise, air, and water pollution, overcrowding and other toxic agents that must be solved in planning for the future.

15. Experimental psychology is concerned with those psychologists who use experimental methods to study how people react to sensory stimuli, perceive the world around them, learn and remember, respond emotionally, and are motivated to action, whether by hunger or desire to succeed in life.

16. Forensic psychology is concerned with the application of psychological knowledge and principles to legal issues. It is concerned with an array of problems of psychological nature including the reliability of evidence, the reliability of eyewitness, testimony, the role of human memory, the psychology of decision-making.

17. General psychology explains the underlying principles of human behavior, how or why people behave this way or that way.

18. Genetic psychology (also known as developmental psychology) is concerned with the study of human behavior in all its aspects of growth and development in the entire life.

19. Industrial psychology (also called organizational psychology) is an attempt to explain human behavior in the industrial setting. It is concerned with the application of the knowledge of psychology to the practical human problems in business organizations.

20. Legal psychology is the application of the problems of human behavior in law, or any legal proceedings. It deals with testimony and evidence, the examination of witnesses, study of the individual delinquent and criminal and with problems of the law.

21. Mental hygiene is concerned with the systematic practice of measures for the development of a sound mental health, its preservation and prevention of mental illness.

22. Physiological psychology is the branch which investigates the functions of the different organs of the body, the brain and the nervous system; how these affect behavior and mental processes.

23. Psychiatry is psychology as applied in medicine, concerned with the treatment of mental diseases.

24. Psychometic psychology is the science on psychological measure. "Metric is Greek word that means measurement". The psychologists develop new tests and evaluate existing tests.

25. Senescent psychology is the scientific study of human behavior in old age.

26. Social psychology is the study of social interaction and the ways in which individuals influence one another.

27. Vocational guidance is concerned with giving assistance especially students in the choice of their life occupation or vocation for gainful employment.