Parent training for preschool ADHD: a randomized controlled trial of specialized and generic programs

Area of Science:

• Child Psychology
• Behavioral Therapy
• Attention-Deficit/Hyperactivity Disorder (ADHD) Research

Background:

• The New Forest Parenting Package (NFPP) is an 8-week home-based intervention designed for parents of preschoolers with attention-deficit/hyperactivity disorder (ADHD).
• NFPP aims to improve attention and impulse control by fostering constructive parenting behaviors.
• Previous studies indicated NFPP's effectiveness in community samples, but its efficacy in clinical settings compared to active treatments was unknown.

Purpose of the Study:

• To evaluate the short- and long-term efficacy of the NFPP compared to the Helping the Noncompliant Child (HNC) intervention.
• To assess the generalization effects of NFPP in young children diagnosed with ADHD.
• To compare NFPP against an established clinic-based parenting intervention for noncompliant behavior in children with ADHD.

Main Methods:

• A randomized controlled trial involving 164 preschool-aged children (3-4 years) meeting DSM-IV ADHD criteria.
• Participants were randomized into three groups: NFPP (n=67), HNC (n=63), or a wait-list control (WL, n=34).
• Primary outcomes included blinded teacher and parent ratings of ADHD symptoms; secondary outcomes involved clinician assessments, laboratory measures, and ratings of oppositional behavior and parenting practices.

Main Results:

• Parents in both NFPP and HNC groups reported improvements in children's ADHD and oppositional defiant disorder (ODD) behaviors, as well as parenting practices, compared to the wait-list control.
• These parent-reported gains were largely sustained at follow-up.
• Crucially, parent-reported improvements were not supported by blinded teacher ratings or objective observational data. NFPP did not demonstrate superiority over HNC and was less effective on some measures.

Conclusions:

• The study findings do not support NFPP's ability to address underlying ADHD dysfunctions or produce generalized behavioral changes.
• The results highlight the challenges in achieving treatment generalization across different settings.
• The importance of utilizing blinded outcome measures for accurate assessment of treatment efficacy in ADHD interventions is emphasized.