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cerebellum

n. (pl. cerebella) a portion of the hindbrain dorsal to the rest of the brainstem, to which it is connected by the cerebellar peduncles. The cerebellum modulates muscular contractions to produce smooth, accurately timed ballistic movements; it helps maintain equilibrium by predicting body positions ahead of actual body movements, and it is required for some kinds of motor conditioning. [Latin, literally: “little brain,” diminutive of cerebrum]

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Psychology term of the day

January 18th 2025

group fallacy

group fallacy

1. the assumption, regarded as erroneous, that the actions and experiences of people in groups cannot be understood completely through analysis of the qualities of the individual members.

2. the mistaken assumption that a group is totally uniform, whereas in fact members differ from one another in many respects. See also outgroup homogeneity bias.