A 17-year longitudinal study from Ben-Gurion University of the Negev followed children from birth to adolescence to explore whether early-life factors can predict ADHD, and for whom the environment matters most. Published in Infant and Child Development, the study tracked ~125 children and their parents, examining infant temperament, parental ADHD symptoms, and the richness of the early home environment. The key finding: Early 'risk factors" don't affect all children equally.