Tag Archives: ABA

Discrete Trial Training (DTT)

4 Jun

In making my course for teachers and paras for students with severe disabilities, I’ve been looking for content related to what we do in the classroom. Today I decided to work on Discrete Trial Teaching (DTT) sometimes also called Discrete Trial Instruction (DTI). Same thing, different name.

I prefer video over text alone, so I went first to TeacherTube, since the school system doesn’t block that site. However, the only video there on the subject is the one I posted. Oh well. YouTube is a better source for videos on anything and a search there was much more fruitful. Here’s one working with a very young child. No matter the age, the same rules always apply. Keep the instruction consistent, reinforce independent responses, and record the responses for data analysis. The YouTube video gives very comprehensive, yet concise instruction on the topic and I’d love to use it.

There is also a series of Lovaas training videos on YouTube which are much more advanced, behaviorally speaking, but the one listed above gives a better overview in a lot less time . Part 1 shows how not to do it in the beginning, which you can see from the comments elicited strong reactions from a few viewers. It’s a bit dated, but you get a good view of a purer form of DTT from the Lovaas people. There are many YouTube videos in a variety of languages worth looking at and these are mostly used for and by parents. Teachers and paras really need to tap into this information, too.

Typing in “ABA” reveals a lot of videos showing it in action, mostly with very young children with autism. DTT is not the same thing as Applied Behavior Analysis (ABA). ABA is more of a global description of a system. It’s sort of like referring to “rain” as “weather.” Yes, rain is weather, but it’s only one aspect of weather and even precipitation. Weather encompasses all manner of meteorological events including wind current, barometric pressure and the jet stream. ABA encompasses a whole lot more topography beyond just DTT, but a lot of people outside the field confuse the two.

I recently put a couple more videos up showing some of what I do with a type of DTT here and here. This is also serving as a sort of tutorial in modeling for para instruction at the same time instructing the student. I probably need to make a more explicit para training video since that is a big issue for most special ed teachers.

I like DTT because it is straightforward, and something that paras can learn and do pretty easily. It can yield some good data and works well with short-term IEP objectives. It is something that is not expensive to set up, and it is accessible to anyone who wants to learn how to do it.

Catherine Maurice’s Behavior Intervention for Young Children remains one of the best and most accessible resources on the subject even though she makes the common mistake of confusing ABA with DTT. Many of these interventions can be used with older students with severe autism and you’ll recognize what we do in the videos compared to what is done with the youngsters. It’s only been within the last 10 years that DTT really took off in the autism community, so students in high school were probably never exposed to this behavioral technology at a younger age.

D.