psychology

noun psy·chol·o·gy \ -jē \

Definition of psychology

plural psychologies
1 :the science of mind and behavior
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 :a theory or system of psychology
  • Freudian psychology
  • the psychology of Jung

psychologist

play \-jist\ noun

Examples of psychology in a Sentence

  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.

Recent Examples of psychology from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'psychology.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

The roots of psychology

The word psychology was formed by combining the Greek psychē (meaning “breath, principle of life, life, soul,”) with –logia (which comes from the Greek logos, meaning “speech, word, reason”). An early use appears in Nicholas Culpeper’s mid-17th century translation of Simeon Partliz’s A New Method of Physick, in which it is stated that “Psychologie is the knowledg of the Soul.” Today, psychology is concerned with the science or study of the mind and behavior. Many branches of psychology are differentiated by the specific field to which they belong, such as animal psychology, child psychology, and sports psychology.

Origin and Etymology of psychology

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



PSYCHOLOGY Defined for English Language Learners

psychology

noun

Definition of psychology for English Language Learners

  • : the science or study of the mind and behavior

  • : the way a person or group thinks


PSYCHOLOGY Defined for Kids

psychology

noun psy·chol·o·gy \ sī-ˈkä-lə-jē \

Definition of psychology for Students

:the science that studies the mind and behavior

Medical Dictionary

psychology

noun psy·chol·o·gy \ -jē \

medical Definition of psychology

plural psychologies
1 :the science of mind and behavior
2 a :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 :a treatise on or a school, system, or branch of psychology


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