Computer‐based training to teach observers to accurately score problem behavior using fast forwarding at 5x normal speed

Machado et al. (2021) built a 30-minute computer lesson that teaches adults to score problem behavior while the video plays at five-times normal speed.

After each practice clip the program gives feedback. The researchers used a multiple-baseline design across participants to see if accuracy would rise.

Observer error dropped below 11 percent and stayed there. Review time fell by two-thirds compared with normal-speed scoring.

All learners reached the mastery goal and kept the skill two weeks later.

The same lab first showed that 3.5× speed still gave accurate data (Machado et al., 2019). The new study pushes the speed to 5× and adds training, so you can go faster without losing quality.

Other teams used short videos to teach discrete-trial fidelity (Lionello-DeNolf et al., 2025) and preference assessments (Hansard et al., 2018). All found that brief video or computer instruction quickly brings naive staff to mastery.

Together the papers say: a 5- to 30-minute screen lesson can replace lengthy in-person workshops for many observer skills.

If you score long behavior samples, this module frees two-thirds of your time while keeping error under 11 percent. You can assign the training, require 90 percent mastery, and trust new assistants to code at 5× speed next week. More time for treatment, less time staring at video.