Bagley C, Jacobson S
Psychol Med. 1976 Aug;6(3):423-7. doi: 10.1017/s0033291700015865.
The hypothesis has been tested that three types of suicide ('old and handicapped', 'sociopathic' and 'depressed') will vary in prevalence across ecologically defined urban areas. The hypothesis is supported with respect to 'old and handicapped' suicide, which predominated in middle-class areas with established residents of middle-class status; and with respect to 'sociopathic' suicide, which predominates in central areas with high rates of social pathology of all kinds, and poor housing conditions.
三种类型的自杀（“年老及残疾者”、“反社会型”和“抑郁型”）在根据生态特征定义的城市区域中的发生率会有所不同。“年老及残疾者”自杀的情况支持了这一假设，此类自杀在以中产阶级身份的常住居民为主的中产阶级区域占主导；“反社会型”自杀的情况也支持了该假设，此类自杀在各种社会病态发生率高且住房条件差的中心城区占主导。
