white matter

parts of the nervous system composed of nerve fibers that are enclosed in a myelin sheath, which gives a white coloration to otherwise grayish neural structures. The sheaths cover only the fibers, so regions containing mainly cell bodies are gray. Compare gray matter.

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Psychology term of the day

November 24th 2024

point scale

any scale for measuring some construct or attribute in which participants’ responses to a series of multiple-choice questions are given numerical values (points). The final score is the total points earned. See also Likert scale; semantic differential.