PSY 250 Lecture Notes - Lecture 6: Felix Weingartner, Blind Experiment, Dependent And Independent Variables
8 Dec 2016
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Beyond the control group: experimenters are also prone to expectation. Double blind procedures: any procedures that an experimenter uses (during the experiment) to ensure that both experimenter and participant do not know what group or condition the participants are in. Beyond the control group: experiments cost money and time. Therefore, you must get it right: pilot studies. Advanced experimental design: factorial design, notation, main effects. An increase in one leads to an increase in another. An increase in one leads to a decrease in another. These suggest that variables are related in simple ways. An increase in one leads to an increase, then decrease, then increase (for example) in another. This suggests variables are related in complex ways: the causal relationship between variables is almost always complex. Depends on several factors: experimental design must reflect this complexity. Increase the number of levels of the iv. Advanced experimental design: factorial experimental designs, most experiments have a factorial design.
