Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
The Babinski reflex is a physical response where a baby's big toe moves upward or toward the top surface of the foot and the other toes fan out when the sole of the foot is firmly stroked.
AP course connection
Topic 6.1: 6.1 The Lifespan and Physical Development in Childhood