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11 - Experimental Research Designs(pay most attention to...

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Experimental Research Designs ( pay most attention to this chapter) Factorial Designs o Experiments that examine more than 1 IV at a time o Research design that involves all combinations of at least 2 values (levels) of 2 or more IV’s o Allow us to test interactions Can also test the main effect of each IV o Allow us to test multiple hypothesis By testing interactions and main effects o Require more time and participants T-test o A statistical procedure used to compare 2 means simultaneously o These 2 means usually represent 2 levels of 1 IV o Does not allow for the testing of interactions or an examination of the joint effects of 2 IV’s ANOVA o A statistically procedure used to compare 2 or more means simultaneously o Used to study the joint effects of 2 or more IV’s o Calculates an F-statistic which indicated whether or not the means are significantly different from one another o One factor/Simple One-way ANOVA = t-test o t^2 = F o
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