Raymond Moody is most famous as an author of books about life after death and near-death experiences (a term which he coined in 1975)

Mihaly Csikszentmihalyi

Paul Ekman developed the Facial Action Coding System (FACS) to taxonomize every conceivable human facial expression

Robert Rosenthal author of "On the Social Psychology of the Self-Fulfilling Prophecy: Further Evidence for Pygmalion Effects and their Mediating Mechanisms"

Aušra Augustinavičiute is the founder of Socionics which is based on Carl Jung's work on Psychological Types, Freud's theory of the conscious and subconscious, and Antoni Kepinski's theory of information metabolism

Julian Jaynes is best known for his book "The Origin of Consciousness in the Breakdown of the Bicameral Mind", in which he argues that ancient peoples were not conscious as we consider the term today, and that the change of human thinking occurred within the last few thousand years, possibly even within recorded historical times

Timothy Leary

Jerome Bruner his ideas are based on categorization. "To perceive is to categorize, to conceptualize is to categorize, to learn is to form categories, to make decisions is to categorize"

Albert Ellis is a psychologist who originated Rational Emotive Behavior Therapy (REBT), a theory which holds that one's personal beliefs and evaluations control one's feelings

Viktor Frankl was the founder of logotherapy and Existential Analysis, the "Third Viennese School" of psychotherapy

Erik Erikson was a developmental psychologist and psychoanalyst known for his theory on social development of human beings, and for coining the phrase 'identity crisis'

Carl Ransom Rogers 'Rogerian psychotherapy' became widely influential, embraced for its humanistic approach

Alfred Charles Kinsey his research on human sexuality profoundly influenced social and cultural values in the United States especially in the 1960s and was an important influence on the sexual revolution

Frederick Perls coined the term 'Gestalt Therapy' for the approach to therapy he developed with his wife Laura Perls

Karl Lashley his failure to find a single biological locus of memory (or "engram", as he called it) suggested to him that memories were not localized to one part of the brain, but were widely distributed throughout the cortex

Roberto Assagioli was the founder of the transpersonal psychology movement known as Psychosynthesis

Louis Leon Thurstone was responsible for the standardized mean and standard deviation of IQ scores used today, as opposed to the mental age system originally used by Binet, as well he is known for the development of the Thurstone scale, the first formal technique for measuring an attitude

Karen Horney challenged many of Freud's ideas as being misogynist, particularly his concept of penis envy, she countered with the claim of "womb envy", that males perceived females as being inferior largely due to males' inability to give birth

Lewis Terman was best known for inventing the Stanford-Binet IQ test, which popularized IQ tests in America

Charles Edward Spearman was an English psychologist known for work in statistics, as a pioneer of factor analysis, and for Spearman's rank correlation coefficient, he also did seminal work on human intelligence, including the discovery of the g factor

Vladimir Bekhterev noted the role of the hippocampus in memory and founded the field of psycho reflexology, transferring Pavlov's work on dogs to humans, and discovered Bekhterev's disease

Emil Kraepelin his laboratory discovered the pathologic basis of Alzheimers

disease, as well as what we now know as schizophrenia, dementia praecox

Hermann Ebbinghaus pioneered experimental study of memory, and discovered the forgetting curve

Ivan Petrovich Pavlov was a Russian physiologist who made important contributions

to psychology such as describing the phenomenon now known as "conditioning" in experiments with dogs