1. Prosociality driven by selfish motivation (i.e. self-regarding preferences): experiment 1–2 of current study; [12]; [47] also confirmed the groupmate results. 2. Prosociality driven by selfish moti
*indicates p<.05, bold indicates that the measure accounts for more than 10% of the variance. aSpearmans r, with dichotomized variable. **n.a. as all rats headed to the geometric cue.
