Objectives: To compare mother-infant interaction characteristics between A-sib infants at 6-10 months and 12-15 months, with and without high phenotypic autism risk, and TD-sib controls.
Methods: Ninety 6-min mother-infant unstructured play interactions were videotaped within the British Autism Study for Infant Siblings (BASIS). The videotapes were rated, blind to dyad information, on a global rating scheme which involved 3 maternal, 3 infant and 2 dyadic dimensions. The rating scheme has been revised from previous presentations of our data, and was developed based on typical developmental, attachment, and autism literatures and previously validated scales.
Results: A preliminary analysis of N=55 at 6-10 months found that, as a group, the mothers of A-sib infants with high phenotypic atypicality were more likely to show lower sensitive responsiveness and low acceptance of infant behaviour. Here, we will present findings for the full sample across two time points in infancy.
Conclusions: Measures collected in this study reflect dyadic characteristics and hence neither maternal nor infant behavior could be described as causing the atypicality. The amelioration, stability or exacerbation of such interactional characteristics would have implications for early (prodromal) intervention.
* The BASIS Team in alphabetical order: S. Baron-Cohena, P. Boltonb, T. Charmanc, H. Garwoodd, L. Tuckerd, and A. Voleind