Does DTT require a table? The defining feature is a clearly arranged trial, not a piece of furniture. Discrete trials can occur at a desk, on the floor, standing, moving between stations, using a device, or in another accessible setting. The location should fit the response, materials, sensory and mobility access, privacy, safety, client preference, and plan for using the skill under meaningful conditions.
Ask: does DTT require a table here?
Write the cue, response, response window, prompt, consequence, and trial boundary. Then choose where those events can occur accurately and comfortably. Check whether the location supports the person's preferred posture and an easy exit before the first trial. A table can organize materials, yet it can also create reach, glare, noise, movement, or participation barriers.
Choose an accessible arrangement
Ask about seating choice, standing or movement, visual field, hearing, language, AAC positioning, mobility space, lighting, sensory load, breaks, and equipment. Confirm that the person can leave or pause through an accessible response.
Plan meaningful use
A correct response in an arranged area may be an acquisition result. Test the response with relevant materials, people, and settings under ordinary supports before claiming transfer or generalization. Keep teaching trials and probes in separate series.
Use current sources modestly
The CDC page contrasts highly structured DTT with approaches in more natural settings without prescribing furniture. The BACB outline covers trial-based and free-operant procedures as examination content. The Ethics Code supports contextual fit, client involvement, risk, and evaluation.
A practical example
Malik learns package symbols while standing at an accessible sorting shelf. The team uses eight clearly bounded trials, then checks two real packing tasks. Table sitting is irrelevant to the goal and would block Malik's preferred working position.
Questions families can use
Which feature makes this DTT? Why this location? Can the person move or pause? Are AAC and mobility tools positioned correctly? Which later probe tests useful performance?
Sources
- Association for Behavior Analysis International, Basic Principles in Behavior Analysis
- Behavior Analyst Certification Board, BCBA Test Content Outline, 6th edition
- Centers for Disease Control and Prevention, Treatment and Intervention for Autism Spectrum Disorder
- LeBlanc and colleagues, Naturalistic Language Strategies for Children With Autism
- Behavior Analyst Certification Board, Ethics Code for Behavior Analysts
- American Speech-Language-Hearing Association, Augmentative and Alternative Communication
Finni resources
