PSYC 2030 Lecture Notes - Lecture 8: External Validity, Demand Characteristics, Ecological Validity
10 Apr 2018
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Example for regression fo the mean - exam question. Subjects know they are in an experiment and may alter behaviour - if you bring them into a lab. May believe they are special and the centre of attention (hawthorne effect) May try to go along with things (good subject) Try to help out to confirm experiment hypothesis. Aspects of the study the lead the participant to behave in desired ways. May be concerned with how one comes across (evaluation apprehension) Not the same as the good subject problem. What did the they the study is about, did they guess right or wrong. If they thought right, then you remove their data. If people could choose with condition they can go into. People who leave different than those who stay - all of the sudden, the people who stay, are different they are different than those who left . Or is it something that occurs only in the lab.
