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  • 2016

  • Schröder, Lisa; Seehagen, Sabine; Zmyj, Norbert; Hebebrand, Johannes (2016): Wie du mir, so ich dir? Die Entwicklung von prosozialem Verhalten und der Zusammenhang mit externalisierenden und internalisierenden Auffälligkeiten. In: Zeitschrift fur Kinder- und Jugendpsychiatrie und Psychotherapie 44 (1), S. 31-38. DOI: 10.1024/1422-4917/a000396

    DOI: http://www.ncbi.nlm.nih.gov/pubmed/26864225 

    Abstract: Supporting other human beings is a fundamental aspect of human societies. Such so-called prosocial behavior is expressed in helping others, cooperating and sharing with them. This article gives an overview both of the development of prosocial behavior across childhood and of the relationship between prosociality and externalizing and internalizing problems. Especially externalizing problems are negatively associated with prosocial behavior, whereas the relationships with prosocial behavior are more heterogeneous for internalizing problems. Studies investigating developmental trajectories demonstrate that prosocial behavior and externalizing problems are not opposite ends of a continuum. Rather, they are two independent dimensions that may also co-occur in development. The same applies to internalizing problems, which can co-occur with pronounced prosociality as well as with low prosociality.

    Keywords: Adolescent, Child, Child, Preschool, Development, Helping Behavior, Humans, Infant, Internal-External Control, Pädagogische Psychologie, Personality Development, Problem Behavior/psychology, Risk Factors, Social Behavior, Sozialpsychiatrie, Verhaltensforschung

  • 1998

  • Nowak, M. A.; Sigmund, K. (1998): Evolution of indirect reciprocity by image scoring. In: Nature 393 (6685), S. 573-577. DOI: 10.1038/31225

    DOI: http://www.ncbi.nlm.nih.gov/pubmed/9634232 

    Abstract: Darwinian evolution has to provide an explanation for cooperative behaviour. Theories of cooperation are based on kin selection (dependent on genetic relatedness), group selection and reciprocal altruism. The idea of reciprocal altruism usually involves direct reciprocity: repeated encounters between the same individuals allow for the return of an altruistic act by the recipient. Here we present a new theoretical framework, which is based on indirect reciprocity and does not require the same two individuals ever to meet again. Individual selection can nevertheless favour cooperative strategies directed towards recipients that have helped others in the past. Cooperation pays because it confers the image of a valuable community member to the cooperating individual. We present computer simulations and analytic models that specify the conditions required for evolutionary stability of indirect reciprocity. We show that the probability of knowing the 'image' of the recipient must exceed the cost-to-benefit ratio of the altruistic act. We propose that the emergence of indirect reciprocity was a decisive step for the evolution of human societies.

    Keywords: Altruism, Biological Evolution, Computer Simulation, Cooperative Behavior, Evolutionsbiologie, Good manners, Helping Behavior, Humans, Indirect reciprocity model, Indirekte Reziprozität, Interaktion, Kooperation, Mutation, Reziprozität, Selection, Genetic, Soziale Angemessenheit, Spieltheorie
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