PSY BEH 101D Lecture Notes - Lecture 5: Primitive Reflexes, Startle Response, Object Permanence
5 Apr 2018
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Lecture 5: motor, sensory, and perceptual development: motor development. Newborn reflexes: reflexes: built-in reactions to stimuli; automatic, some reflexes have _adaptive value. Sucking reflex: suck on item placed in the mouth. _grasping : grasps object when palms are touched. _moro : startle response to sound or dropping by throwing head back and arms/legs stretch out. _babinski: fanning out of toes when foot is stroked. _stepping: infants seem to walk when feet are placed on hard surface. Reflexes and brain development: indication of early brain development. Certain reflexes exist at certain times, then _disappear. Presence of absence, strength of reaction can be used to determine _brain damage. Infancy: gross motor skills: gross motor skills: involve __large-muscle activity (not with your hands) activities (e. g. , kicking, walking, specific progression has not been identified, wide range for age-appropriate skills, expert crawlers 7-12 months. Beginnings of cruising, holding on to supports: walking between 9-17 months, running between 18-24 months.
