8-26-10

8-26-10 - Child psych 8-26-10 Terms - Independent Variable...

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Child psych – 8-26-10 Terms – - Independent Variable (IV) - variable expected to have the effect. - Dependent variable (DV) – variable on which the effect is expected to occur. o Ex. Do peers tend to reject other kids who are overweight? IV – weight, DV – rejection… 5 Research Issues 1. Correlational vs. Experimental a. Correlational: measure degree to which scores on IV are related to scores on DV. a.i. IV causes DV a.ii. DV causes IV a.iii. 3 rd variables cause BOTH IV and DV a.iv. More than one may be true Ex: Does prenatal responsiveness influence adjustment in newborns? Results: positive correlation – replicated. a.iv.1.a. Interpretation – based on these studies, can you say: - Being responsive caused newborns to be more adjusted? NO - Is there equally plausible way to explain correlation? – (3 rd variable/factor causing both) educational background, families, more money so mom stays home, good genes, social resources, etc. It can also mean that well-
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8-26-10 - Child psych 8-26-10 Terms - Independent Variable...

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