Plenty is doing.
"[In a 36-year follow up of a national birth cohort] a number of early characteristics were significantly [though modestly] related to adult outcome, including enuresis, nail-biting, speech problems, truancy, and composite indices of behaviour and personality. Continuity was not explained by factors acting independently on child and adult measures."
Disclaimer: this quote appears here only to spark discussion. It is not endorsed one way or the other. Make up your own mind. Or just refresh the page for another viewpoint. From a collection assembled by the late Chris Brand.