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Intensive Behaviour Intervention Services (IBI)

TPAS-GCA provides IBI services to families living in the 'South' Quadrant of Toronto. IBI is a form of teaching derived from the principles of Applied Behaviour Analysis (ABA). While there is no one treatment which is entirely accepted by all professionals and parents as the 'only' approach to use, treatment based on the principles of Applied Behaviour Analysis (ABA) have been scientifically proven to facilitate the best outcomes for children with autism.

There are currently 4 IBI teams; each consists of a Supervisor/Senior Therapist, one lead therapist and 8 Instructor Therapists.. The Supervisor/Senior Therapist works in conjunction with a Clinical Supervisor who oversees the program and reports back to the Clinical Director of TPAS. Individual programs are developed and monitored by the Senior Therapist and consulting Clinical Supervisor/Psychologist who reports back to the Clinical Director of TPAS.

Questions and Answers about TPAS - IBI


ABA stands for Applied Behaviour Analysis, which is a scientific process to identify the functional relations between observable behaviour and environment context. ABA uses this information to design interventions that will enhance social and personal well-being. ABA is based on objective evaluation and empirically based interventions to achieve meaningful, generalizable and enduring behaviours. (Condensed from ONTABA Standards of Practice)

IBI stands for Intensive Behavioural Intervention, which refers to the application of principles of ABA in an intensive setting (minimum 20hrs per week) to result in behaviour change and improvement.

DTT refers to Discrete Trial Teaching where skills are broken down into small components and taught individually before being incorporated into a whole skill.

ITT refers to Intensive Teaching Time. This is the time spent, predominantly at a table, where individual target skills are worked on in a systematic format.

NET refers to Natural Environment Teaching. This is where goals such as increasing communication and generalizing other skills occur. It generally refers to the environment that an individual interacts eg:: in play, at the park, at home, in the child’s bedroom.

TPAS-GCA provides IBI service in a centre-based model.

Reinforcers are used to strengthen a desired behaviour. They tend to be child specific and could include favorite toys, food, or videos. All tangible reinforcement is always paired with social reinforcement such as praise, tickles or hugs.

Because the IBI program at TPAS-GCA focuses on the child’s motivation, (for example, what they like to do, like to talk about or like to play with), Instructor Therapists (ITs) use these facts to establish a motivating, interactive and fun place to be. IT’s pair themselves with these reinforcing items and events and children come to see the staff as fun and reinforcing to be around. This makes the tasks seem fun and children are often eager to participate.

Each child is individual and brings different strengths and needs with him or her. Outcomes can vary significantly and while IBI has been shown to be effective for some children, some may need other intervention. The program is closely supervised and regular assessment and evaluation occurs to ensure that appropriate intervention is being provided.

Programs and progress are evaluated and assessed by a Supervising Psychologist on an ongoing basis. The duration of the service is based on clinical data and the needs of the child.