Using real-time visual feedback to improve posture at computer workstations.

Dudley et al. (2008) asked office workers to sit better at their computers.

They gave each adult a small camera and screen that showed a live side-view of their neck and back.

Each time posture slipped, the picture itself acted as a prompt to straighten up.

People also logged their own posture every 15 minutes. The study used a multiple-baseline design across participants.

Most workers quickly sat taller and kept their head back.

The better they were at noting their own posture, the bigger the improvement.

Gains stayed high for the whole study period.

The result lines up with Goomas et al. (2017), who used handheld computers to give instant feedback to food-plant workers. Both studies show that a screen prompt right when the error happens cuts mistakes fast.

Dib et al. (2007) got the same quick change in children learning flute posture, proving the tactic works across ages and tasks.

Ben-Yehudah et al. (2019) seems to disagree. They found that college students with ADHD understood less and judged their own work poorly when reading on a screen. The key difference is diagnosis. Digital feedback helps neurotypical adults notice their body, but it can overload students with ADHD. Same tool, different learner.

If you coach desk workers, place a cheap webcam so they can see their own slouch in real time. Add a simple self-check sheet. The live picture does the teaching, and the log keeps them honest. Start with neurotypical staff first; learners with ADHD may need extra supports or a printed prompt instead.