PSYCH211 Lecture Notes - Lecture 3: Visual Acuity, Fetus
10 Jul 2013
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4 week old (1 month) baby: little interaction. 6 month old baby: still unable to speak, likes making sounds, likes to put things into his/her mouth, likes to pick up and hit objects. How can we tell what their perceptual world is like: chemical senses: smell and taste, cognitive senses: hearing & vision. Adults can discriminate up to 10,000 different chemical substances: perceptions may change to distinguish more differences if one becomes associated with an object more frequently eg. wine taster can taste the difference between each wine. Adult taste organized around 4 dimensions: bitter (at the back of tongue, sour (at the back sides, salty (front sides, sweet (at the tip) *there is a special relationship between smell and taste. Eg. a smell can bring back a taste from 15 years ago. Facial reactions to sweet, sour, and bitter tastes in 2 hour olds: reaction to sweet sample. Aaah but its sweet nice: reaction to sour sample.
