What is psychology & its definition?

To check your understanding of Introduction to Psychology, solve this short test – Click here for MCQ test

What is Psychology?

The word psychology has Greek roots; it means study of the psyche (i.e “breath, spirit, soul”) and logos  means “science or study of” or “research“.

The symbol of Psychology is the 23rd Greek alphabet ‘Psi’ (Ψ) means soul or mind.

Earlier, It was ‘the science of mind’, then it became ‘the science of consciousness’ (by Wilhelm Wundt); study of unconscious (by Sigmund Freud) ; ‘a science of behavior’ (by John Watson), and finally ‘The study of human behaviour and mental processes.

  • Psychology is the scientific study of the activities of the individual in relation to his environment.

However, it studies mental processes, experience and behavior of Individual, dyadic (two persons) group and organizational. They have biological as well as social bases.

Basically It is

1 Study of consciousness
2 Study of unconscious
3 Study of behavior

a. Behavior
b. Mental processes
c. Scientific method


According to some psychologist, researches and experts like

  • William James (1890) defined psychology as, “the science of mental life, both of its phenomena and their conditions”.
  • John B. Watson (1913) defined It as, “the acquisition of information useful to the control of behavior”.
  • Ciccarelli & Meyer,2006 defined psychology as, “the scientific study of behavior and mental processes.”
  • Rathus, (2008) defines as, “the science that studies behavior and mental processes.
  • American Psychological Association (APA) defined, “Psychology is a multifaceted discipline and includes many sub-fields of study such areas as human development, sports, health, clinical, social behavior and cognitive processes.”

So, basically psychology studies, the nervous system, sensation and perception, learning and memory, intelligence, language and thinking, growth and development, motivation and emotion, personality, stress, psychological disorders, ways of treating those disorders, sexual behavior, and the behavior of people in social settings such as groups and organizations.

To check your understanding of Introduction to Psychology, solve this short test – Click here for MCQ test

Leave a Reply

Your email address will not be published. Required fields are marked *