THELWALL, John (1764 – 1834)

1764 – 1834

1 entries in the GMN corpus.

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1810 CE

#4969.2

A letter to Henry Cline, Esq. on imperfect developements (sic) of the faculties mental and moral, as well as constitutional and organic; and on on the treatment of impediments of speech.

THELWALL, John (1764 – 1834)

The first book on mental deficiency. Thelwall recognized that sensory deprivation could be a cause of apparent mental defect through his work with handicapped children. He established criteria for distinguishing betwe…

Physiology & Embryology