It is an effectiveness rather than an efficacy study, largely administered by school personnel, which
relates duration of the training (1 — 5 years) to a set of outcomes previously found to be associated with mental health.
Relating duration of social emotional
training to various outcomes associated with mental health, significant positive connections were found on five out
of the seven dependent variables considered: YSR internalizing, YSR externalizing, mastery, ITIA (total) and contentment in school.