Teaching braille line tracking using stimulus fading.

Leung et al. (2014) taught three learners to track braille lines. The lines started close together. The gaps slowly grew bigger. This is called stimulus fading.

The team wanted errorless learning. They moved from easy to hard spacing. No guessing was needed.

All three people got better at finding the next line. Two hit the mastery goal. Errors stayed low.

Fading the gap worked. It turned a hard visual task into small, safe steps.

Mulder et al. (2020) looked at 28 studies. Most used stimulus fading for learners with ID. The review says fading is still the top errorless tool. Leung et al. (2014) adds braille tracking to that list.

Richardson et al. (2017) also used fading, but for sight words. They faded pictures, not gaps. Both papers show the same rule: start with help, then take it away.

Schneider et al. (1967) and Fantino (1968) did early fading work with kids who had severe ID. They cut errors to near zero. Leung et al. (2014) repeats that win with a new skill and new population.

If you teach braille, start with lines almost touching. Move them apart only after the learner tracks perfectly. You will see fewer errors and faster mastery. The same fade plan works for print, pictures, or math facts. Pick the feature that matters—gap, color, or size—and shrink the help step by step.