The low psychological well-being of the divorced and separated could b
e due to the hardships of the divorce process, more general problems o
f unmarried living, or differential selection for divorce. Using combi
ned questionnaire and register data on 39,000 Norwegian men and women,
it is shown that psychological well-being is a strong predictor of su
bsequent marital dissolution over a 2 to 4-year period. The strength o
f the relationship is particularly strong in the short run, but remain
s significant throughout the period of observation. The strong short-t
erm relationship is most probably due to hardships associated with the
divorce process The somewhat weaker long-term relationship could be d
ue to selection effects, but the possibility that low well-being many
years before the separation may be due to persistent marital problems
cannot be ruled out.