A review by Fischer et al. suggested that the magnitude of this phenomenon in dangerous situations is consistent with the arousal: cost-reward model. One experiment testing this phenomenon had participants complete a questionnaire while smoke was pumped into the room; that experiment was conducted (10[1])by John Darley and Bibb Latané. This effect is partly driven by diffusion of responsibility and mitigated by group cohesiveness. (10[1])Good Samaritan laws attempt to overcome this effect. (10[2])One illustration (10[1])of this phenomenon is the murder of Kitty Genovese. For 10 points, name this effect in which an individual in a large group does not offer help during a crisis. ■END■