RT Article T1 Adult altruism: problems of terminology in prosocial behavior research JF Psychologia VO 29 IS 4 SP 197 OP 214 A1 Poplawski, W. T. LA English YR 1986 UL https://krimdok.uni-tuebingen.de/Record/1636638163 K1 Prosoziales Verhalten K1 Altruismus