Find over 25,000 psychological definitions


vestibular nystagmus

involuntary eye movements consisting of slow drift in one direction followed by a rapid movement in the opposite direction, caused by stimulation of the vestibular apparatus during rotation of the head. Also called rotational nystagmus. Compare physiological nystagmus.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

January 19th 2025

developmental milestone

developmental milestone

any aspect of physical, cognitive, social, or emotional development that is significant and predictable, such that children throughout the world develop this ability, characteristic, or behavior at about the same time. Developmental milestones include presence of first teeth and language acquisition.