Both subjects with and subjects without a paternal history of alcoholism discriminated among the different sucrose concentrations (r=0.88, N=58, p<0.001, and r=0.87, N=64, p<0.001, respectively). A clear preference was noted for the three sweetest solutions, with the 0.42-M solution given the highest ratings (overall, F=10.0, df=4, 115, p<0.001) (t1). The preference ratings for the 0.21-M, 0.42-M, and 0.83-M solutions were statistically indistinct (Bonferroni-adjusted analysis of variance [ANOVA], p>0.05), but all three were significantly more likely to be preferred over the 0.05-M and 0.10-M solutions (Bonferroni-adjusted ANOVA, p<0.05). These results did not differ as a function of paternal history of alcoholism (F=0.71, df=4, 115, p=0.59), sex (F=1.27, df=4, 115, p=0.29), or the interaction of paternal history of alcoholism and sex (F=1.56, df=4, 115, p=0.19).
Of the 122 subjects in the study, 91 (74.6%) were categorized as sweet likers or dislikers. Twenty-five subjects (20.5%) preferred the 0.21-M solution, and six subjects (4.9%) expressed no preference. Among both subjects with and subjects without a paternal history of alcoholism, sweet-liking subjects predominated (70 of 91, 76.9%), although the difference in proportions was not significant (80.0%, N=32 of 40, and 74.5%, N=38 of 51, respectively) (χ2=0.13, df=1, p=0.71, with Yates’s correction).