Children with attention-deficit/hyperactivity disorder (ADHD) often struggle with emotion regulation deficits. While much research explored the neurodevelopmental antecedents of emotion dysregulation in ADHD, little is known about how parents can help regulate children with ADHD in daily life. In this study, we examined parental interpersonal emotion regulation (IER) strategies during a conflict discussion with their child and their impact on the child’s emotion dysregulation during the…