Biele, G., Rieskamp, J., & Czienskowski, U. (2009). Erratum to "Explaining cooperation in groups: Testing models of reciprocity and learning" [Organizational Behavior and Human Decision Processes, 106 (2008), 89-105]. Organizational Behavior and Human Decision Processes, 108(2), 342-343. doi:10.1016/j.obhdp.2008.11.002.