PSY 302 Lecture Notes - Lecture 3: Overproduction, Heredity, Active Child

• School: Ryerson University
• Department: Psychology
• Course: PSY 302
• Professor: Lixia Yang

Document Summary

Lecture 3 newborns" readiness for life (2) categories of baby reflexes. Newborn reflexes: reflex: involuntary, automatic response to a stimulus: survival reflexes. Rooting reflex: turning the head in the direction of a touch on the check. Sucking reflex: sucking on objects placed into the mouth. Eye-blink reflex: closing or blinking the eyes. Pupillary reflex: constriction of pupils to bright light and dilation to dark or dim light: primitive reflexes (then slowly disappears because reflexes are subcortical rather than the superior cortex that later controls your voluntary actions) Babinski reflex: fanning and then curling the toes (until 8 month-a year) Palmar grasping reflex: curling the fingers around objects that touch the baby"s palm (first 3-4 months) Moro reflex: throw out arms and arch the back, and then bring the arms toward each other as if to hold onto something (4-6 months) Swimming reflex: actively move the legs and arms and involuntarily hold breath when immersed in water (4-6 months)