Inclusion Criteria:  Parents of children, aged 4-8, who demonstrate behavior symptoms consistent with ADHD symptoms, i.e., at least 4 inattention and/or 4 hyperactivity/impulsivity symptoms (parent-report). The number of symptoms is lower than the diagnostic threshold to include those with emerging problems. No diagnosis will be made or confirmed in the study. Children need to live with the participating parents at least 5 days per week every week.  Exclusion Criteria:  Parents of children who have received other forms of pharmacological and/or non-pharmacological treatment in the past 3 months. These parents will be asked to wait to receive other forms of treatment until they complete the study participation.  Parents of children demonstrating symptoms consistent with Autism Spectrum Disorder, and those other difficulties (severe learning, mood and anxiety problems and environmental issues [e.g., recent divorce]) that would better explain the child's challenges transition routines.