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Unformatted text preview: Do people recognize positive or negative words more quickly?) Î» Use more than one dependent variable Î» Manipulate two independent variables Î» Strength in Experimental Research Î» Conclusions about cause-effect can be made. Î» Weaknesses Î» Nature of experiments are relatively artificial. Î» There are ethical issues/limits concerning experiments. Î» Î» Correlational Studies Î» Correlational studies identify associations between variables. Î» These kinds of studies are useful when one cannot manipulate the independent variable. Î» Two alternative explanations in correlational findings: Î» Third-variable complication (extraneous variable) Î» Directionality (reverse causality problem) Î» Perhaps some people just have tendencies that are unrelated to the study. Î» **Correlation does not equal causation!...
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- Fall '08
- Psychology, Causality, dependent variable Manipulate, Experimental Research Conclusions, independent variables Strength