Attachment traumatology and dyadic completion: Toddler trauma, ten years post-treatment

Orientation: Research to elucidate trauma as a contagion in attachment traumatology began in 2014 with the construct of dyadic completion as a therapeutic goal for a traumatised toddler. Further research revealed secure phylogenetic attachment (SPA) as the antithesis of trauma, Attachment Focussed-Somatic Experiencing (AF-SE) as an efficacious treatment for dyadic trauma and interpersonal neurosynchronistic phylogenesis (INP) as a construct to explain how phylogenetic attachment dynamics are transposed neurosynchronistically in dyads throughout communities. These phenomena offer insight into community mental health.Research purpose: The purpose of the study was to elucidate neurosynchronistic constructs in attachment traumatology to examine treatment outcomes longitudinally.Motivation for the study: Assessed psychometrically, Little Bill (LB) was reviewed to examine his mental health and phylogenetic attachment dynamics ten years post-treatment.Research approach and/or design and method: A longitudinal single-case design was followed using psychometric assessments and clinical interviews with three family members.Main findings: Outcomes support dyadic completion as an effective treatment confirmed by long-term efficacy.Implications for practice: Dyadic completion in AF-SE is an effective treatment for dyadic trauma.Contribution and/or value-add: Dyadic completion resolves dyadic trauma phylogenetically. Trauma and SPA may now be considered as interpersonal, neurosynchronistic and phylogenetic phenomena impacting attachment and community mental health.