World Federation for Mental Health

an international, nongovernmental association of organizations and individuals formed in 1948 to advance the prevention of mental and emotional disorders, the proper treatment and care of those with such disorders, and the promotion of mental health worldwide. The federation organizes World Mental Health Day.

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Psychology term of the day

September 8th 2024

complementary class

in set theory, the totality of elements that do not belong to a particular class. For example, if A is the class of all psychologists, then its complementary class is the class of all people who are not psychologists.