Merrill-Palmer scale

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A scale for measuring mental abilities in preschool children from 18 months to 6 years of age (in the Merrill-Palmer Scale of Mental Tests), or 3 to 5 years of age (in the revised version, called the Extended Merrill-Palmer Scale), designed to provide a broader assessment than can be gained from a conventional IQ test. The Merrill-Palmer Scale of Mental Tests, introduced originally in 1926, comprises 93 tasks, grouped into clusters labelled Language, All-or-None, Form Board and Picture, and Motor Coordination, and grouped into six-month age ranges. The Extended Merrill-Palmer Scale comprises 16 tasks grouped into Semantic Production, Figural Production, Semantic Evaluation, and Figural Evaluation, based on Guilford's structure-of-intellect model. See also Guilford's cube. [Named after the Merrill-Palmer School in Detroit, Michigan, where the scale was developed in 1931 by the US psychologist Rachel Stutsman (later Rachel Stutsman Ball, 1894–1980). The school was endowed by and named after Lizzie Pitts Merrill-Palmer (1838–1916), wife of the US Senator and Ambassador to Spain Thomas Witherell Palmer (1830–1913)]

Subjects: Psychology.

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