The word psychology derives from the Greek word psyche, for spirit or soul. The latter part of the word "psychology" derives from -λογία -logia, which refers to "study" or "research". The Latin word psychologia was first used by the

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The ancient civilizations of Egypt, Greece, China, India, and Persia all engaged in the philosophical study of psychology. In Ancient Egypt the Ebers Papyrus mentioned depressionand

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Institutions
In 1920, Édouard Claparède and Pierre Bovetcreated a new applied psychology organization called the International Congress of Psychotechnics Applied to Vocational Guidance, later called the International Congress of

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Biological
Psychologists generally consider biology the substrate of thought and feeling, and therefore an important area of study. Behaviorial neuroscience, also known as biological psychology, involves the application of biological

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Personality
Personality psychology is concerned with enduring patterns of behavior, thought, and emotion. Theories of personality vary across different psychological schools of thought. Each theory carries different assumptions about such

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Psychology encompasses many subfields and includes different approaches to the study of mental processes and behavior.
Psychological testing
Psychological testing has ancient origins, dating as far back as 2200 BC, in the examinations for the Chinese civil service

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Quantitative psychological researchlends itself to the statistical testing of hypotheses. Although the field makes abundant use of

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