Although raising a child with a neurodevelopmental behavioral disorder (NDBD) is challenging for all parents, wide variability exists. Some parents struggle severely, whereas others thrive relatively well. Nevertheless, research tended to focus on the maladaptive side of parenting a child with special needs, leaving the more positive side underexplored. However, Self-Determination Theory (SDT) has been strongly impacting research in typical groups by uncovering the mechanisms underlying both “dark” and “bright” pathways in parenting. This project aims to provide a more balanced view on families with special needs and to bridge the gap between research on parenting in special and typical groups by testing a SDT-based model in three NDBD groups (Down syndrome, Cerebral palsy, and Autism spectrum disorders) relative to