RT Book T1 Immoral criminals? An experimental study of social preferences among prisoners A1 Birkeland, Sigbjørn A1 Tungodden, Bertil A1 Sørensen, Erik Ø. A1 Cappelen, Alexander W. A2 Tungodden, Bertil A2 Sørensen, Erik Ø. A2 Cappelen, Alexander W. LA English UL https://krimdok.uni-tuebingen.de/Record/1866335790 AB This paper studies the pro-social preferences of criminals by comparing the behavior of a group of prisoners in a lab experiment with the behavior of a benchmark group recruited from the general population. We find a striking similarity in the importance the two groups attach to pro-social preferences in both in strategic and non-strategic situations. This result also holds when the two groups interact. Data from a large internet experiment,matched with official criminal records, suggest that our main finding from the lab experiment is not influenced by the additional scrutiny experienced by participants in prison.Pro-social preferences; Criminals; Lab experiment K1 Research