Based on significant phenotypic relationships that were identified in Table 2, the following bivariate relationships between C-RA, A-RA, and alcohol involvement were explored (see Table 4 for cross-trait correlations due to A, C, and E; additional details regarding fit indices are available upon request): a)C-RA and ever drinking in Whites: this relationship was solely attributable to C, which were negatively and strongly correlated (rC = −.72; Table 4).b)C-RA and timing of first alcohol use in Whites: this relationship was solely attributable to C, with higher C-RA associated with later first use of alcohol (rC = .42; Table 4). The upper confidence limit on the correlation of C was 1.0, indicating that all shared environmental influences on timing were correlated with those influencing C-RA.c)A-RA and ever drinking in Whites and Blacks: in Whites, C factors were potentially completely overlapping and responsible for 83% of the covariance. E factors explained 17% of the covariance in Whites and 100% of the covariance in Blacks.d)A-RA and timing of first alcohol use in Whites: this correlation was primarily attributable to A factors (rA = .75)
