A psychologist is a scientist who studies the mind. Unless specified, you should assume the psychologist studies the human mind — as opposed to, for example, a pet psychologist.

A psychologist can be a researcher, who makes abstract studies of mental disorders and their treatments. Or, a psychologist can be licensed to see and treat patients, offering therapy for mental conditions or behavioral issues. The word comes from two Latin root, psyche, meaning "soul, mind, and spirit," and logia, meaning "the study of." Unlike a psychiatrist, a psychologist does not have a medical degree, and therefore cannot prescribe medication.

Definitions of psychologist
  1. noun
    a scientist trained in psychology
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    Alfred Binet
    French psychologist remembered for his studies of the intellectual development of children (1857-1911)
    Cyril Lodowic Burt
    English psychologist whose studies of twins were later said to have used fabricated data (1883-1971)
    James McKeen Cattell
    American psychologist and editor (1860-1944)
    Raymond Bernard Cattell
    American psychologist (born in England) who developed a broad theory of human behavior based on multivariate research (1905-1998)
    Kenneth Bancroft Clark
    United States psychologist (born in Panama) whose research persuaded the Supreme Court that segregated schools were discriminatory (1914-2005)
    Hans Jurgen Eysenck
    a British psychologist (born in Germany) noted for his theories of intelligence and personality and for his strong criticism of Freudian psychoanalysis
    Arnold Lucius Gesell
    United States psychologist noted for his work in child development (1880-1961)
    Granville Stanley Hall
    United States child psychologist whose theories of child psychology strongly influenced educational psychology (1844-1924)
    William James
    United States pragmatic philosopher and psychologist (1842-1910)
    Carl Gustav Jung
    Swiss psychologist (1875-1961)
    Timothy Francis Leary
    United States psychologist who experimented with psychoactive drugs (including LSD) and became a well-known advocate of their use (1920-1996)
    Charles Kay Ogden
    English psychologist who collaborated with I. A. Richards in designing Basic English (1889-1957)
    Jean Piaget
    Swiss psychologist remembered for his studies of cognitive development in children (1896-1980)
    Carl Rogers
    United States psychologist who developed client-centered therapy (1902-1987)
    Herbert Alexander Simon
    United States economist and psychologist who pioneered in the development of cognitive science (1916-2001)
    Burrhus Frederic Skinner
    United States psychologist and a leading proponent of behaviorism (1904-1990)
    Edward Lee Thorndike
    United States educational psychologist (1874-1949)
    John Broadus Watson
    United States psychologist considered the founder of behavioristic psychology (1878-1958)
    Robert Mearns Yerkes
    United States psychologist who studied the intelligence of primates (1876-1956)
    Joseph Banks Rhine
    United States parapsychologist (1895-1980)
    Stanley Smith Stevens
    United States psychologist and psychophysicist who proposed Stevens' power law to replace Fechner's law (1906-1973)
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    behaviorist, behaviourist
    a psychologist who subscribes to behaviorism
    hypnotiser, hypnotist, hypnotizer, mesmerist, mesmerizer
    a person who induces hypnosis
    someone who studies the evidence for such psychological phenomena as psychokinesis and telepathy and clairvoyance
    a person (usually a psychologist but sometimes a linguist) who studies the psychological basis of human language
    a psychologist trained in psychophysics
    type of:
    a person with advanced knowledge of one or more sciences
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