Key points are not available for this paper at this time.
Daniel Bar-Tal, Yaakov Bar-Zohar, Martin S. Greenberg, Margarete Hermon, Reciprocity Behavior in the Relationship Between Donor and Recipient and Between Harm-Doer and Victim, Sociometry, Vol. 40, No. 3 (Sep., 1977), pp. 293-298
Bar‐Tal et al. (Thu,) studied this question.