PSYC 304 - Ch.6

PSYC 304 - Ch.6 - CHAPTER 6: SENSORY AND PERCEPTUAL...

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Unformatted text preview: CHAPTER 6: SENSORY AND PERCEPTUAL DEVELOPMENT ISSUES IN THE STUDY OF PERCEPTUAL DEVELOPMENT sensation detection and discrimination of sensory information (ex: hearing and distinguishing high and low tones) perception interpretation of sensations, including recognition and identification attention selectivity of perception (ex: child doesnt hear his parents calling him because he is watching TV) Perceptual Development addresses 2 questions: What are the most important changes that occur across the course of development? How can we explain these changes? o All of the sensory systems are operative from birth and achieve close to adult-level functioning by the end of infancy: we will therefore concentrate mostly on the infant period. Nature vs Nurture views on Perceptual Development (PD) Nurture (environmental/learning view): child starts life with minimal ability to take in and make sense of sensory info, through experience it develops its perception o As we observe something over and over again, the synapses that fire in our brain grow stronger so that we piece it together faster and faster Nature (biological view): emphasizes the natural equipment that animals and humans have evolved for gatherin info from their world o Gibson: theory that natural relations exist between the senses (ex: infants should be sensitive to the synchrony of visual and auditory events and this appears to be the case) Research suggests its a bit of both Continuous vs Discontinuous of PD debate The challenge has been to trace the gradual evolution of perceptual competencies as the child develops TOUCH AND PAIN, SMELL AND TASTE, MOTION AND BALANCE We have less info on these than about hearing and vision TOUCH AND PAIN The baby feels pain (ex: circumcision) it is not necessarily short lived -> ex: circumsized without anesthesia? More sensitive to vaccinations later! The baby shows touch reflexes even the fetus is sensitive to touch! Touch sensitivity increases over the first several days of life Important for relations between children and adults (ex: soothing, etc) Haptic perception the perceptual experience that results from active exploration of objects by touch o with age, infants assume an increasingly active rold in acquiring info through touch o by the end of the first year of life, infants can recognize a familiar object by exploration with the hand alone SMELL AND TASTE Smell Even newborns will turn their head away from a cotton swab that feels bad!Even newborns will turn their head away from a cotton swab that feels bad!...
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PSYC 304 - Ch.6 - CHAPTER 6: SENSORY AND PERCEPTUAL...

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