A comparative study: completion of fine motor office related tasks by high school students with autism using video models on large and small screen sizes.

Four high-schoolers with autism practiced office tasks like stapling papers and filling envelopes.

Each teen watched the same how-to video on two screens: a laptop and a tiny PDA.

The team flipped the screen order every day to see which one helped the kids work more accurately.

Every student made fewer errors when the video ran on the laptop.

The bigger screen won every time, even though the clips were identical.

Macpherson et al. (2015) also used portable video modeling, but they handed kids an iPad during kickball and still saw fast social gains. Their tablet sits between a PDA and a laptop, so size matters less when the task is quick praise, not fine paper work.

Torres et al. (2018) extended the idea to teen exercise: an iPad schedule kept students with ASD on-task without teacher help. Again, the mid-size screen worked, but the job was gross-motor, not stapling.

Ledbetter-Cho et al. (2018) pooled nineteen tablet studies and found learner-run tablets beat teacher-run ones. The meta-analysis supports screens, yet none tested the tiny PDA used here, explaining why C et al. still vote for the largest view.

If you teach vocational or life-skills that need finger precision, pick the biggest screen you have. A laptop or desktop monitor beats a phone, iPod, or old PDA. Save the small devices for social or exercise tasks where fine accuracy is not the goal.