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Lecture

PSYCH291 Lecture Notes - Condom, Confounding


Department
Psychology
Course Code
PSYCH291
Professor
Joanne Wood

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Ways to try to rule out possible confounds
Ways to try to rule out possible confounds:
*Operationalize the i.v./predictor in a new way not susceptible to the
confound
e.g., Dutton and Aron
physiological arousal à sexual attraction
Ways to try to rule out possible confounds:
2. Use comparison groups equated for the possible confounding variable
e.g.,
*alcohol expectancy in MacDonald, Zanna, Fong research
*drug studies—placebo conditions
*ACG and ECG in therapy outcome research
Ways to try to rule out possible confounds:
*Hold the possible confounding variable constant
e.g., risk-taking personality in MacDonald et al. correlational study (all
condom users)
Ways to try to rule out possible confounds:
*Measure the possible confounding variable and control it statistically
e.g., partial correlations
If PV à DV even when possible confound controlled, suggests confound
not a problem—does not explain the PV DV association
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