1/9/2009
1
Advanced
Correlational Studies
Correlational Studies
_________________________
Unique relation of variables to each other
Three or more variables
usually continuous
usually
continuous
can be categorical (race, gender, etc.)
Can NOT determine causal effects, but
can predict score on one variable based
on scores on other variables
_________________________
“Sleep deprivation, intelligence, and study
time all predict unique variance in GPA”
OR “Sleep deprivation predicts GPA
controlling for intelligence and study time
”
controlling
for
intelligence
and
study
time
Can examine which one predicts the
outcome the best
The magnitude of each predictor controls
for the magnitude of the other predictors.
