Verbal Behaviour Therapy (VB) for Autism in Ontario

How Verbal Behaviour Therapy Works

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.

Research Evidence

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.

VB Therapy in Ontario

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.