Jolien van Aar started in September 2015 as a PhD student at the Research Institute of Child Development and Education, Preventive Youth Care. Her research focuses on the longer term effects of parenting interventions and the possible differences in long term effects for different subgroups of parents and children. Her meta-analysis on sustained, fade-out or sleeper effects showed that parenting intervention generally lead to sustained reductions in child behavior problems. It however also showed that sustainability is stronger in some cases than others. She therefore aims to find out when and why some families are better able to initiate and maintain improved parent- and child behavior than others.
Using 2.5 year follow-up data of a large randomized controlled trial of the Incredible Years Parenting Program (the ORCHIDS study), she will test whether intervention response trajectories (response vs non-response vs fallback trajectories) can be predicted by family type (coercive families vs multiproblem families vs disruptive child families vs low problem families). In addition, she is currently conducting a field experiment in which she tests whether parents' goal-orientation influences parents' ability to initiate and maintain improved parenting and child behavior.
Jolien received her bachelor diploma in Human Movement Sciences (2012) at the Free University in Amsterdam. In 2015, she received both her Master degree in Pedagogical Sciences and Research Master degree in Child Development and Education at the University of Amsterdam.