PSYCH 1X03 Chapter Notes - Chapter 2: Confounding, List Of Fables Characters, Operational Definition
15 Sep 2016
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Anecdotal evidence: gathered from others or self experience o. Single experience might not be representative: personal experience might not be representative, change might not be due to assumed reason. Experiment: measures effect of one variable on another o. Control group: group which does not have independent variable manipulated o. Within-subjects design: manipulate independent variable with same subject to minimize effect of external variables: problems: time consuming, costly, practice effect (subject improves at experiment) Between subjects design: one group acts as control group. Confounding variable: a variable other than the independent variable which has an effect on results. Results from very specific groups cannot be generalized. Random assignment: assigning subjects to either group randomly to avoid biases. Placebo effect: when individual responds to treatment which has no related effect. Participant bias: when a participant"s actions influence the results. Blinding: when participants don"t know which group they belong to. Experimenter bias: actions made by experimenter to promote result they want.
