Psychology Glossary

The Glossary of Psychology describes everything about the World of Psychology. Terms, Treatments, biographies, ... .

Below you see a selection of some articles of this glossary. You can use our search field in the upper right for finding specific articles.

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The Acquired immune deficiency syndrome (AIDS) refers to the disease caused by the human immunodeficiency (or immune deficiency) virus (HIV) that attacks the immune system and leaves the person susceptible to unusual infections.

Discontinuity of development refers to a theoretical position for explaining Development proposing that normal and abnormal developmental changes are abrupt and qualitative.

- Formal Operational Stage (11 - 15 years) (Piaget) : Formal Operational Stage refers to the 3rd of the four (4) stages Piaget uses to define cognitive development.

Inclusive Fitness refers to the reproductive fitness of an individual organism plus any effect that the organism has on increasing reproductive fitness in related organisms.

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