Behavioral parent training (BPT) programs are considered the gold standard for intervening in early-onset conduct disorders.¹ Our understanding of the disorder etiology has evolved from a focus on the coercive parent-child interaction to include more complex considerations, including gene−environment interactions.² Refining our understanding of prevention and early intervention for these common and costly disorders is an important public health priority, because an estimated 3% of children and their families are affected, compromising adolescent and adult outcomes.² As detailed in a recent review, the five most well-established BPTs, including the Incredible Years Series, contain common elements (use of didactics; modeling; role playing; and homework practice) and theoretical underpinnings (eg, social learning; attachment).³ Furthermore, they share the common bond of academic mentorship in the 1960s and 1970s. These BPT programs are referred to as “Hanf-Model BPT programs” in recognition of developers’ influential faculty teacher, Dr. Constance Hanf, from the University of Oregon, Child Development and Rehabilitation Center.³