Research Paper Volume 9, Issue 4 pp 1293—1306

Functional human GRIN2B promoter polymorphism and variation of mental processing speed in older adults

Figure 3. Reaction time in Experiment 1 participants with increasing age based on stratification by GG genotype and A allele carriers (AA and AG genotypes) group differences. A significant difference in the slopes of the regression lines was observed for A allele carriers (-3.99 ± SE 3.47) versus the GG genotype group (5.84 ± SE 2.28) (p = 0.026). R2 for GG regression was 0.336 while R2 for A allele carriers was 0.107.