
Definition: The Moro reflex, also known as the startle reflex, is an involuntary response that is present at birth and usually disappears between the ages of 3 to 6 months. The reflex occurs when an infant is startled by a loud noise or other environmental stimulus or feels that he or she is falling. The reflex causes the baby to extend the arms, legs and fingers and arch the back.
Child Development:
Image courtesy Piotr Bizior
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How we define reflex by psychology?