It is clear from the material outlined in the previous chapters that what happens to the children of problem drinkers once they grow up to adulthood is of great interest, both practically and theoretically. When we started this study there was a great deal that was not known about this group of people. For example, we knew very little about a whole range of adulthood outcomes apart from drinking behaviour. There were also many things which were unclear concerning the childhood family lives of the offspring of problem drinkers, and the ways that these correlated with adulthood outcome. Hence, for example, we knew that many children of problem drinkers reported very unhappy, disharmonious family backgrounds, but it was not clear whether or not it was the parental drinking problem, or the family disruption, which might lead to any deleterious adult outcomes.