The effects of mastery training and explicit feedback on task design preference in a vocational setting.

Two adults with severe intellectual disability worked on two ways to pack items. One way used short, smooth motions. The other used longer, choppy motions.

The team first taught each adult to master the smooth-motion method. Then they added a big kitchen timer and extra pay when the adult picked the smooth way. They tracked which style each adult chose across days.

Both adults started picking the smooth-motion design once the timer and bonus pay were in place. Their choice kept to the efficient style even when the extra pay thinned out.

The study shows adults with severe ID can learn to prefer the faster, less tiring method if you pair it with clear cues and immediate reward.

Christian et al. (1997) used self-checklists to raise restaurant output for adults with mild ID. The new study adds mastery plus salient cues for adults with severe ID, widening the tool kit.

Chang et al. (2011) pushed the idea into the community. Phone prompts helped adults with cognitive impairments switch tasks on their own. Together the papers build a ladder: teach efficiency, then support it with tech in real jobs.

Reichle et al. (2010) worked with preschoolers and delay cues. Both studies show explicit cues (timer, count-down card) speed work, proving the tactic works across ages and diagnoses.

You can shape work preference, not just work skill. Start with brief mastery training on the best method. Then make the efficient choice obvious: post the timer, give a small bonus, praise the faster pace. Once the learner feels the win, fade the extra pay and let the natural ease of the task keep the choice alive. This saves staff from endless prompting and gives the worker a job they can finish with less fatigue.