Reward vs. Reciprocity as Related to Attraction1

Groups of six subjects participated in a study to investigate the effect of obligation upon attraction. Each subject received offers of monetary aid from other members of the group. Amount of aid offered was varied along with the obligation attached to the aid. The effect of the offer upon the recipient's attraction to the donor was assessed. Both attraction and desire for coalition were greatest when the offer of aid was high and the obligation to return the benefits received was low.