Chew K S, McCleary R
School of Social Ecology, University of California at Irvine 92717-5150.
Suicide Life Threat Behav. 1994 Fall;24(3):234-44.
The three distinct suicide cycles reported since the late 19th century have been explained using sociological and biological theories. Despite their obvious differences, both theories operate through motivation. Like other aspects of suicide, however, such cycles can also be explained by opportunity. Analysis of recent findings on age- and sex-specific suicide cycles illustrates a fundamental confound of motivation and opportunity, and underscores the need for a theory of suicide that is based on risk (risk = motivation x opportunity), and that is situated in a framework of age- and sex-specific life course contingencies.
自19世纪末以来报道的三个不同的自杀周期已用社会学和生物学理论进行了解释。尽管这两种理论存在明显差异，但它们都是通过动机起作用的。然而，与自杀的其他方面一样，这些周期也可以用机会来解释。对近期关于特定年龄和性别的自杀周期的研究结果分析表明了动机和机会之间的一个基本混淆，并强调需要一种基于风险（风险=动机×机会）且置于特定年龄和性别的生命历程偶然性框架中的自杀理论。
