Acquisition of generalized telephone use by students with moderate and severe mental retardation.

Meyer et al. (1987) taught three high-school students with moderate and severe intellectual disability to use a telephone. The team ran the lessons in the special-ed classroom, then tested if the kids could still dial at home and in the community.

They used multiple exemplar training. Students practiced with many different phone types and numbers. The trainers also moved the lesson across rooms so the skill was not tied to one place.

All three students learned to dial a full seven-digit number without help. They kept the skill over the study period and used it in new places without retraining.

Generalization was big. One student called his mom from a pay phone at the mall. Another ordered pizza from a classroom phone that had never been used for lessons.

The result lines up with Neef et al. (1986) and Weitz (1982). Those earlier studies also used multiple-baseline designs in special-ed rooms and got strong maintenance. A et al. showed spelling words stuck for six months. E showed peer-tutored social skills lasted once edible reinforcement took hold.

Jameson et al. (2008) extends the idea. They moved the teaching out of the special-ed room and into general-ed classrooms. Typical peers delivered constant time delay lessons, and students with significant ID still learned. The setting changed, but the strong outcome stayed the same.

Abadir et al. (2021) looks different at first glance—they used video modeling to teach abduction-prevention to kids with ASD. Yet the design and payoff match: multiple baseline, large generalization, solid maintenance. Method matters more than diagnosis.

You do not need fancy tech. Rotate phones, places, and numbers during teaching. Take data in the cafeteria, the lobby, and at home. One session a week in a new spot is enough to keep the skill flexible. If the learner can dial from three settings, you are done—no extra booster programs required.