The strain theory of suicide postulates that suicide is usually preceded by psychological strains. A psychological strain is formed by at least two stresses or pressures, pushing the individual to different directions. A strain can be a consequence of any of the four conflicts: differential values, discrepancy between aspiration and reality, relative deprivation, and lack of coping skills for a crisis. Psychological strains in the form of all the four sources have been tested and supported with a sample of suicide notes in the United States and in rural China through psychological autopsy studies. The strain theory of suicide forms a challenge to the psychiatric model popular among the suicidologists in the world. The strain theory of suicide is based on the theoretical frameworks established by previous sociologists, e.g. Durkheim (1951), Merton (1957), and Agnew (2006), and preliminary tests have been accomplished with some American (Zhang and Lester 2008) and Chinese data (Zhang 2010; Zhang, Dong, Delprino, and Zhou 2009; Zhang, Wieczorek, Conwell, and Tu 2011). There could be four types of strain that precede a suicide, and each can be derived from specific sources. A source of strain must consist of two, and at least two, conflicting social facts. If the two social facts are non-contradictory, there would be no strain. Strain Source 1: Differential Values
When two conflicting social values or beliefs are competing in an individual’s daily life, the person experiences value strain. The two conflicting social facts are competing personal beliefs internalized in the person’s value system. A cult member may experience strain if the mainstream culture and the cult religion are both considered important in the cult member’s daily life. Other examples include the second generation of immigrants in the United States who have to abide by the ethnic culture rules enforced in the family while simultaneously adapting to the American culture with peers and school. In...
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