- 認知科学 (ISSN:13417924)
- vol.22, no.3, pp.426-436, 2015-09-01 (Released:2016-03-01)
This study investigated the effect of moral foundation and feeling of disgust toward acriminal case on non-professional legal decisions. Three hundred and sixty participantswere asked to read a fictional story about a murder attempt case and rated a possi-bility that a defendant, who had denied all charges against the case, would be judgedas guilty. Participants were also rated a degree of regrets about their decision if thetruth would be either guilty or not guilty. The degree of physical injury of a victim wasvaried in accordance with three conditions (i.e., minor, heavy, and permanent damage).The analysis revealed that participants who put much value on not harming others feltdisgust toward the criminal case, and that resulted in higher ratings of possibility thatthe defendant would be judged as guilty. In addition to that, as the degree of physi-cal injury of the victim got severer, the ratings of the possibility also got higher, andparticipants felt less regrets of their decision even if the defendant was actually nota real perpetrator and thus they made Type II error. We discussed characteristics ofnon-professional legal decisions from both theoretical and practical perspectives.