Fig. 4
From: Adult age differences in the integration of values for self and other
Differential effects of €self, €other and their interaction on drift rate in younger and older adults. Note. Bayesian posterior densities of drift rates (v-parameter) estimated from hierarchical regression drift-diffusion models and how they varied as a function of payoff values €self and €other. For an effect to be meaningful, 95% of the distribution has to be on the left or right of zero (dotted vertical grey line). (A) Main effects of €self and €other on the drift rate, separately for younger (YA; purple) and older adults (OA; green). All main effects indicated a positive impact of €self and €other on drift rates in YA and OA. (B) €self × €other interaction effect on the drift rates in YA and OA. Only younger adults demonstrated a positive interaction effect of €self × €other on drift rates.
