Therapy Decision Guide
VB therapy is eligible under OAP core clinical services when delivered by BACB-certified behaviour analysts or supervised therapists. It falls within the ABA service category funded through the childhood budget.
Ask any prospective provider which of these credentials they hold, and confirm the credential with the relevant regulatory college before starting.
VB therapy classifies language into functional units called verbal operants. Mands are requests motivated by what the child wants. Tacts are labels for objects, actions, and properties. Echoics involve repeating what someone else says. Intraverbals are conversational exchanges without visual prompts. Each operant is taught systematically using ABA principles.
Therapists use motivation as the primary teaching tool. When a child reaches for a toy, the therapist prompts the child to request it verbally. This creates a direct connection between communication and desired outcomes. Natural environment teaching embeds these opportunities throughout daily routines and play.
Assessment tools like the VB-MAPP (Verbal Behavior Milestones Assessment and Placement Program) guide individualized programming. The VB-MAPP evaluates 170 milestones across language, social, and academic domains. It identifies barriers to learning and provides a curriculum roadmap tailored to each child's profile.
Sundberg and Partington's foundational work established the clinical application of Skinner's verbal behaviour analysis. Studies published in The Analysis of Verbal Behavior and Journal of Applied Behavior Analysis demonstrate that VB teaching procedures effectively increase manding, tacting, and intraverbal repertoires in autistic children.
Carr and Firth (2005) reviewed the evidence for VB approaches and found consistent improvements in functional communication. A 2006 study by Sundberg and Michael demonstrated that teaching mands as the first verbal operant produces faster language acquisition than beginning with receptive identification. The BACB recognizes VB as a core competency within behaviour analysis practice.
In Ontario, VB therapy is delivered by BACB-certified behaviour analysts and registered behaviour technicians. Most ABA agencies in Ontario incorporate VB principles into their programming. The OAP funds VB-based services under its core clinical services category.
Parents can access VB therapy through their childhood budget allocation. Many Ontario ABA providers use the VB-MAPP as their primary assessment tool. Parent training components teach families to embed manding opportunities into everyday activities like mealtimes, bath time, and play.
Sundberg (2008)
VB-MAPP: Verbal Behavior Milestones Assessment and Placement Program. AVB Press.
Carr & Firth (2005)
The verbal behavior approach to early and intensive behavioral intervention for autism: A call for additional empirical support. Journal of Early and Intensive Behavior Intervention, 2(1), 18-27.
Sundberg & Michael (2001)
The benefits of Skinner's analysis of verbal behavior for children with autism. Behavior Modification, 25(5), 698-724.
Written by Spencer Carroll
Founder & Autism Advocate
Evidence on this page
Key claims are paired with their source, evidence tier, and verification date so readers can inspect the public record directly.
Early Start Denver Model (ESDM) delivered to children aged 18–30 months produced significant gains in IQ, adaptive behaviour, and autism severity — some children no longer met diagnostic criteria at follow-up
Cochrane systematic review finds evidence that early intensive behavioural intervention (EIBI) may produce positive effects on adaptive behaviour and communication for young children with ASD (low certainty of evidence)
WHO recommends accessible, community-based early interventions for children with autism — timely evidence-based psychosocial interventions improve communication and social engagement
89,799
children are registered in the Ontario Autism Program
23%
Only 20,633 children have active funding agreements — less than one in four