Woodcock-Johnson® III - Riverside Publishing

6education level (chi-square = 4.56; df = 4.0, p = 0.34), race (chi-square = 0.37; df = 1.0,p = 0.54), or gender (chi-square = 0.03; df = 1.00, p = 0.87). Comparison of the ages(in months) of the Canadian and U.S. samples (t test) revealed no significant difference(M difference = 0.40, t (618) = 0.12, p = 0.90). A similar t-test comparison of gradeplacement in tenth of years (M difference = 0.29, t (618) = 1.09, p = 0.27) also was notsignificant. Comparisons of the distributional characteristics of the two samples alsosuggested strong comparability of the two samples. Summary statistics for the matchingvariables are presented in Table 1.