RT Article T1 Experimental Criminology and the Free-Rider Dilemma JF The British journal of criminology VO 61 IS 1 SP 209 OP 227 A1 Koehler, Johann A. A2 Riley-Smith, Tobias LA English YR 2021 UL https://krimdok.uni-tuebingen.de/Record/1745887539 AB Experimental criminology promises a public good: when experiments generate findings about criminal justice interventions, everyone benefits from that knowledge. However, experimental criminology also produces a free-rider problem: when experiments test interventions on the units where problems concentrate, only the sample assumes the risk of backfire. This mismatch between who pays for criminological knowledge and who rides on it persists even after traditional critiques of experimental social science are addressed. We draw from medicine and economics to define experimental criminology’s free-rider problem and expose a dilemma. Either we distribute the costs of producing policy-actionable knowledge to the entire beneficiary population or we justify isolating the risk of experimental harm on that class of the population where ethical concerns are most acute. K1 Ethics K1 Experimental criminology K1 Free-rider K1 Iatrogenesis K1 Medical model K1 Risk of harm DO 10.1093/bjc/azaa057