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