PPE-3003 Study Guide - Midterm Guide: Confounding, Latin Square, Atkins Diet

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Cross-sectional correlations: test whether 2 variables, measured at the same time, are correlated. You measure aggression and time spent watching violent tv when the students are in 3rd grade, and then measure the same things again 10 years later. Tv time in 3rd grade and aggression in 3rd grade cross sectional correlation. Tv time in 12th grade and aggression in 12th grade cross sectional correlation. Autocorrelations: test whether each variable correlates with itself over time. Tv time in 3rd grade and tv time in 12th grade autocorrelation. Aggression in 3rd grade and aggression in 12th grade autocorrelation. Can suggest that tv habits are not stable over time, but aggressive habits are. Cross-lag correlations: test whether an early measure of one variable is associated with a late measure of the other variable. Addresses the directionality establishes temporal precedence. issue, and. Tv time in 3rd grade and aggression in 12th grade cross-lag correlation.