PSYC 1010 Lecture Notes - Confounding, Random Assignment, Scatter Plot

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PSYC 1010 Full Course Notes
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PSYC 1010 Full Course Notes
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Control group studies 0 hours; other groups study 5 and 10. Hypothesis was not supported; more study time didn"t equal higher grade. Another variable not the same last group got no sleep the night before. If you fix that your study can be repeated. Confounding variable a variable that interferes with the results of the study. It affects the dependent variable too (alongside the independent variable), so you don"t know whether the effects are caused by the independent variable, the confounding variable, or both. In an experiment, you want to be able to say that the i. v. is the cause for the d. v. Ex: expectation can be a confounding variable in a study with a control group which is not a placebo control group. Extraneous variable also applies to the experiment, but isn"t an issue. Ex: noise in the background of a reaction time study; it can become confounding when only one group is exposed to the noise.

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