PSY 250 Lecture Notes - Lecture 5: Observational Learning, Internal Validity, Inductive Reasoning
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Iv: the manipulated factor: under the experimenters control (unless subject variable, must have a minimum of 2 levels. 3 general varieties: situational variables -> features in the experiment environment e. g. the # of bystanders in a helping behavior study, task variable. 3. e. g. different types of logic problems, mazes of different levels of complexity. Instructional variables -> the way in which participants were asked perform a certain task e. g. remember a lot of words by forming visual images, forming associations/ repeating the word 3x. Participants are randomly assigned to : experimental group: given treatment/manipulation of iv, control group: treatment/manipulation withheld. Should be identical to the experiments group in all ways except they don"t get treatment. Provides the baseline against which the experimental group can be compared: control group = comparison group. Participants asked to move 10 putts of 100cm: experimental group -> given a reason to feel lucky.
