PSYC30800 Lecture Notes - Lecture 6: Dependent And Independent Variables, Observer-Expectancy Effect, Internal Validity
27 Sep 2016
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Experiment: a research project where the investigator creates equal groups and systematically manipulates an iv and compares the groups to see if the iv affected the behavior measured. Cons: there is a lot of constructs you cannot test because of ethical reasons. Stimulus is present= increase the chance of people behaving in a certain matter. You may think you have it but, human behavior is predictable. Temporal precedence rule: the cause must come before the effect temporal-time (sequence of events) Internal validity rule: most plausible cause with other variables ruled out. Experimental group is the manipulated variable (can have multiple) Hawthorne effect: subjects will behave differently because they are being observed. Demand characteristics the participant will act differently from normal once they know what the study is measuring. Evaluation apprehenson the tendency to feel uneasy when being observed. Biosocial effect experimenter bias where the gender, age, socioeconomic status.
