At any given point in time, those who are divorced tend to report, on average, significantly lower levels of happiness than people who are married. While this result is probably unsurprising to many people, such cross-sectional comparisons between two groups of individuals at the same point in time can often lead to severely misleading conclusions – in this case, that divorce makes people unhappy.
For one thing, the choice to dissolve a marriage is a rare decision for any individual to take, and one that’s unlikely to have been made entirely on a whim. One could even argue that divorce must make people happy given that one would only go through with it if the benefits of doing so outweighed the costs. This leads to an important question: what happens to people’s happiness in the periods before and after divorce?
According to the psychologist Ed Diener, the worst moment for men is the year preceding the divorce. By contrast, the worst moment for women is two years before the divorce, with their happiness on the verge of bouncing back the year preceding the split. This pattern probably reflects the fact that the majority of divorces are initiated by the wife.