PSYC 2110 Chapter Notes - Chapter 7: Visual Acuity, Visual Perception, Evoked Potential
31 Dec 2013
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Chapter 7: early cognitive foundations: sensation, perception, and learning. Research methods used to study infants" sensations and perceptions. If an infant shows no preferences among the target stimuli, it is not clear whether they failed to discriminate them or simply found them equally interesting. Can be called familiarization- novelty : to test infants ability to discriminate 2 stimuli that differ in some way you must: 1) present one of the stimuli until the infant stops attending/responding (habituates). If the infant discriminates this 2nd stimulus from the 1st he/she will dishabituate- that is attend closely to it while showing an change in respiratory/ heart rate. Infants display preference when they are familiar with- but not too familiar with a stimulus. If the infant senses the particular stimulus present, she will show a change in the patterning of her brain waves or evoked potential.
