They prefer the longitudinal survey that investigates graduate employment three-and-a-half years after graduation, contacting graduates who took part in the earlier survey.
Looking at a different longitudinal survey, they found that, while alcohol consumption was associated with transient happiness, it was not linked to long-term satisfaction.
The hope is for the coalition to run large scale surveys -- ideally longitudinal surveys to track how kids do into adulthood -- and do qualitative interviews as well.