Symonds, Percival Mallon, 1893-1960
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Information for Authority record
Sources of Information
- His Special disability in algebra, 1923.
Wikipedia description:
Percival Mallon Symonds (April 18, 1893 – August 6, 1960) was an American educational psychologist. He was known for his development of several tests in the fields of educational, clinical, and school psychology, including the Foreign Language Prognosis Test, the Personality Survey, and the Symonds picture-study test, a projective test administered to adolescents.
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