Ballet’s disease

a disorder marked by the loss of movements of the eye and pupil while autonomic responses remain normal. The condition is associated with hyperthyroid disorders, such as exophthalmic goiter (see exophthalmos). Also called Ballet’s sign; ophthalmoplegia externa. [Gilbert Ballet (1853–1916), French neurologist]

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Psychology term of the day

January 13th 2025

genetic psychology

the study of the development of mental functions in children and their transformation across the lifespan. In the 19th and early 20th centuries, the term was preferred over the synonymous developmental psychology.