%0 Journal Article %T Reciprocity in Gift-Exchange-Games %A Rustam Tagiew %A Dmitry I. Ignatov %J Computer Science %D 2014 %I arXiv %X This paper presents an analysis of data from a gift-exchange-game experiment. The experiment was described in `The Impact of Social Comparisons on Reciprocity' by G\"achter et al. 2012. Since this paper uses state-of-art data science techniques, the results provide a different point of view on the problem. As already shown in relevant literature from experimental economics, human decisions deviate from rational payoff maximization. The average gift rate was $31$%. Gift rate was under no conditions zero. Further, we derive some special findings and calculate their significance. %U http://arxiv.org/abs/1402.5593v1