When every relationship is above average: Perceptions and expectations of divorce at the time of marriage.

Marriage license applicants and law students were surveyed about their knowledge of divorce statutes, knowledge of the demographics of divorce, and expectations for their own marriage. Both groups had largely incorrect perceptions of the legal terms of the marriage contract as embodied in divorce statutes, but they had relatively accurate, if sometimes optimistic, perceptions of both the likelihood and the effects of divorce in the population at large. These same individuals expressed thoroughly idealistic expectations about both the longevity of their own marriages and the consequences should they personally be divorced. Increasing individuals' knowledge of divorce statutes through a course on family law did not diminish this unrealistic optimism. Both groups largely approved of the existing divorce statutes, although there was substantial agreement about a few important respects in which the laws should be changed. These findings suggest that the sense of unfairness and surprise that frequently attend divorce may be a result of systematic cognitive biases rather than of a lack of information about divorce.