Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

psychology

play
noun psy·chol·o·gy \-jē\

Simple Definition of psychology

  • : the science or study of the mind and behavior

  • : the way a person or group thinks

Full Definition of psychology

plural psy·chol·o·gies

  1. 1 :  the science of mind and behavior

  2. 2 a :  the mental or behavioral characteristics of an individual or group b :  the study of mind and behavior in relation to a particular field of knowledge or activity

  3. 3 :  a theory or system of psychology <Freudian psychology> <the psychology of Jung>

psy·chol·o·gist play \-jist\ noun

Examples of psychology

  1. She studied psychology in college.

  2. the psychology of an athlete

  3. the psychology of crowd behavior

  4. We need to understand the psychologies of the two people involved in the incident.



Origin of psychology

New Latin psychologia, from psych- + -logia -logy


First Known Use: 1653



PSYCHOLOGY Defined for Kids

psychology

play
noun psy·chol·o·gy \sī-ˈkä-lə-jē\

Definition of psychology

  1. :  the science that studies the mind and behavior




Medical Dictionary

psychology

play
noun psy·chol·o·gy \-jē\

Medical Definition of psychology

plural psy·chol·o·gies

  1. 1:  the science of mind and behavior

  2. 2a:  the mental or behavioral characteristics typical of an individual or group or a particular form of behavior <mob psychology> <the psychology of arson>b:  the study of mind and behavior in relation to a particular field of knowledge or activity <color psychology> <the psychology of learning>

  3. 3:  a treatise on or a school, system, or branch of psychology





Seen and Heard

What made you want to look up psychology? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 8, 2016

to clear from accusation or blame

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet spindrift pince-nez kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ