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Chapter 6

PSYCH211 Chapter Notes - Chapter 6: Interposition, Motor Skill, Parallax

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Mathieu Le Corre

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Chapter 6
Basic Sensory and Perceptual Processes
Habituation when a novel stimulus is presented, babies pay much attention, but they pay less
attention as it becomes for familiar
o Babies are interested in new/unfamiliar things
Sense of smell and taste are innate
o Babies have the ability to distinguish between 3 different tastes almost right away
(bitter, sweet, sour; NOT salty)
o Able to memorize smells (ex. the smell of their mother’s amniotic fluid)
o Infants LIKE sweet tastes, and DON’T LIKE bitter or sour tastes
Auditory threshold the quietest sound that a person can hear
o Adults can hear better than infants (higher auditory threshold)
Infants (7 month old) are able to use sound to locate objects
o Can distinguish between sound from 15 cm away compared to 60 cm away
Visual acuity the smallest pattern that can be distinguished dependably
o most infants will look at a patterned stimuli instead of a plain one
o can measure acuity by measuring the width of stripes and distance from infant’s eyes
o detecting thinner stripes indicates better visual acuity
cones neurons in the eye (retina) that detect wavelengths and therefore colour
o 3-4 months: infant’s colour perception is similar to that of adults
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