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Randomized Controlled Trial
, 10 (10), 1700-1711

Cross-site Randomized Control Trial of the Social ABCs Caregiver-Mediated Intervention for Toddlers With Autism Spectrum Disorder

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Randomized Controlled Trial

Cross-site Randomized Control Trial of the Social ABCs Caregiver-Mediated Intervention for Toddlers With Autism Spectrum Disorder

Jessica A Brian et al. Autism Res.

Abstract

To evaluate the efficacy of the Social ABCs parent-mediated intervention for toddlers with suspected or confirmed autism spectrum disorder (ASD), through a cross-site randomized control trial, sixty-three parent-toddler dyads (toddler age: 16-30 months) were randomized into treatment (Social ABCs) or control (service-as-usual) conditions. Video data were obtained at three key time-points: Baseline; Post-training (PT; week 12); and Follow-Up (week 24). Analyses included 62 dyads. Treatment allocation significantly accounted for PT gains, all favouring the Treatment group, in (1) child functional vocal responsiveness to parent prompts (R2 = 0.43, P < .001), (2) child vocal initiations (R2 = 0.28, P < .001), (3) parent smiling (R2 = 0.09, P = .017), and (4) fidelity of implementation (R2 = 0.71, P < .001). A trend was observed for increased social orienting (R2 = 0.06, P = 0.054); gains in parent smiling significantly predicted increases in child smiling and social orienting. Parents in the treatment condition reported significant gains in self-efficacy following the intervention (P = 0.009). No differential effects emerged for performance on standardized measures. The Social ABCs is a relatively low-resource, efficacious intervention, with potential to be a cost-effective means of intervening at the first signs of possible ASD. Autism Res 2017, 10: 1700-1711. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Clinical Trial Title: Social ABCs for Toddlers with Signs of Autism Spectrum Disorder: RCT of a Parent-Mediated Intervention http//ClinicalTrials.gov identifier: NCT02428452.

Keywords: Clinical trials; developmental psychology; intervention early; language; parent training; positive affect; social attention; social orienting.

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