Fig. 2. Delayed recall performance for verbal material on the California
Verbal Learning Test (F(1, 8) ¼ 3·37; P¼0·10; Cohen’s f ¼ 0·35) and for
visual-spatial material on the Spatial Paired Associate task (F(1, 8) ¼ 3·23;
P¼0·12; Cohen’s f ¼ 0·67). Subjects consumed either Concord grape juice
( ) or a placebo drink ( ). Values are adjusted means, with standard errors
represented by vertical bars.