PSYC 344 Lecture Notes - Lecture 8: Simple Random Sample, Quota Sampling, Stratified Sampling
19 Aug 2016
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Main effects: effect of an iv on a dv averaging across the levels of any other iv"s. Interactions: variation among the differences b/w means for different levels of one factor over different levels of the other factor: list and describe 3 different types of behavioral dependent variables. Response rate: ratio of # of people who answered the survey divided by the # of people in the sample. Reaction time: elapsed time b/w presentation of sensory stimulus and the subsequent behavioral response) Order in which subject is placed in an experiment effects the data. Ex: fatigue- subjects naturally become upset, tired, and frustrated if kept around for too long. Practice: subjects become accustomed to experimental condition and perform well b/c of this advantage , skewing results. Sweat during stress relases ions which conduct electricity mesured by a polygraph machine. 2. electroencephalogram recording of electrical activity along scalp produced by firing of neurons within the brain.
