Differential impact of a Dutch alcohol prevention program targeting adolescents and parents separately and simultaneously: low self-control and lenient parenting at baseline predict effectiveness.
To test whether baseline levels of the factors accountable for the impact of the Prevention of Alcohol use in Students (PAS) intervention (self-control, perceived rules about alcohol and parental attitudes about alcohol), moderate the effect of the intervention. A cluster randomized trial including 3,490 Dutch early adolescents (M age=12.66, SD=.49) and their parents randomized over four conditions: 1) parent intervention, 2) student intervention, 3) combined intervention and 4) control group. Moderators at baseline were used to examine the differential effects of the interventions on onset of (heavy) weekly drinking at 34-month follow-up. The combined intervention was only effective in preventing weekly drinking among those adolescents who reported to have lower self-control and more lenient parents at baseline. No differential effect was found for the onset of heavy weekly drinking. No moderating roles of self-control and lenient parenting were found for the separate student and parent interventions regarding the onset of drinking. The combined intervention is more effective among adolescents with low-self control and lenient parents at baseline, both factors that were a specific target of the intervention. The relevance of targeting self-control in adolescents and restrictive parenting is underlined.
Department of Interdisciplinary Social Science, Utrecht University, P.O. Box 80.140, 3508 TC Utrecht, the Netherlands. i.koning@uu.nl
Ina M
IM
Koning
Jacqueline E E
JE
Verdurmen
Rutger C M E
RC
Engels
Regina J J M
RJ
van den Eijnden
Wilma A M
WA
Vollebergh
D000293:Adolescent; D000294:Adolescent Behavior; D000428:Alcohol Drinking / Q000523:psychology; D000437:Alcoholism / Q000453:epidemiology / Q000517:prevention & control; D002648:Child; D016001:Confidence Intervals; D005260:Female; D006266:Health Education / Q000379:methods*; D006801:Humans; D016015:Logistic Models; D008297:Male; D009426:Netherlands; D016017:Odds Ratio; D010287:Parent-Child Relations; D016487:Parenting / Q000523:psychology*; D010290:Parents / Q000523:psychology*; D016730:Program Development; D015397:Program Evaluation / Q000379:methods*; D013997:Time Factors