Individual differences in allocation of funds in the dictator game associated with length of the arginine vasopressin 1a receptor RS3 promoter region and correlation between RS3 length and hippocampal mRNA - Knafo, A; Israel, S; Darvasi, A; Bachner-Melman, R; Uzefovsky, F; Cohen, L; Feldman, E; Lerer, E; Laiba, E; Raz, Y; Nemanov, L; Gritsenko, I; Dina, C; Agam, G; Dean, B; Bornstein, G; Ebstein, RP (Genes Brain Behav, 2008)