PSYO 2090 Lecture Notes - Eye Tracking, Habituation, Autonomic Nervous System
6 Feb 2013
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Experimental design: uses independent and dependent variables, strongest for causality, random assignment of subject. Example: time manipulation: multiple measurements of the same subject going through different varriables. Between subject design variables: compare two or more groups with each group having different levels (or types) of the same, although there is random assignment, groups might be matched based on demographic. Since children may not be able to talk or may not have the vocabulary to communicate properly, we must look into pre-verbal and non-verbal ways to test their reactions. Habituation paradigm (pg 52: children look longer at things that are novel/interesting (or non-habitual, this technique can falsify hypothesis that an infant cannot discriminate between two stimuli, since the infant is looking at one stimuli longer. Example: an infant who looks longer at a video being played backwards compared to a regular video would be understood to be looking since it is different than what is normal.
