He is an expert on children’s cognitive and social-emotional development, and on the role, fathers play in promoting children's mental and behavioral health. His research in these areas has been supported by grants from the National Institute of Child Health and Human Development, and the findings have been published in top journals in the field. He worked for several years with all Family Law stakeholders in Arizona to translate research into Arizona’s 2013 shared parenting legislation, and provides expert testimony to policymakers and courts on parenting time issues, especially involving relocation and overnight parenting time for infants.