PSY BEH 101D Lecture Notes - Lecture 5: Pacifier, Retina, Hearing Loss
23 Jan 2014
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Document Summary
Lecture 5: motor, sensory, and perceptual development: motor development, sensation and perception. Newborn reflexes: reflexes: built-in reactions to stimuli, some reflexes have adaptive value. Sucking reflex: suck on item placed in the mouth: other reflexes with adaptive value. Grasping: grasps object when palms are touched. Swimming: holds breath and makes swimming movements with arms and legs. 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. Certain reflexes at certain times, then disappear. Presence or absence, strength of reaction can be used to determine brain damage. Infancy: gross motor skills: gross motor skills: involve large-muscle 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.
