Babinski reflex

the reflex occurring in a healthy infant in which the big toe extends upward and the other toes fan out when the sole of the foot is gently stimulated. This response is elicited in newborns to monitor central nervous system development. The Babinski reflex is normal up to about 2 years of age; in adults, it is an indication of neurological disorder and called Babinski’s sign. [Joseph F. Babinski (1857–1932), French neurologist]

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Psychology term of the day

November 23rd 2024

sibling

n. one of two or more children born of the same two parents (i.e., a sister or brother). Also called sib.