On the value of nonremovable reminders for behavior modification: an application to nail-biting (onychophagia).

Koritzky et al. (2011) tested a simple wristband trick for nail-biting.

They gave people a band they could not take off. The band was meant to remind them to stop biting.

The team compared this gentle reminder to a stronger bitter-nail treatment. They watched who quit the study and who actually stopped biting.

More people stayed in the study when they wore the wristband. Drop-out was lower than with the bitter treatment.

Yet among the people who finished, the bitter stuff worked a little better. The wristband helped, but not as much.

So the band is kinder and keeps clients coming back, but may need a boost for the best results.

Sutphin et al. (1998) reviewed habit reversal — a full package of awareness, competing response, and social support. The wristband is only the awareness piece, so it makes sense it is weaker alone.

Turner et al. (2024) showed that habits stick to the exact cue. A wristband gives a constant cue, which lines up with that lab work.

Labrecque et al. (2024) found that the more a cue is repeated, the more automatic the response. Keeping the band on 24/7 gives those extra reps, something earlier animal work already hinted at.

You can start nail-biting treatment with a cheap, friendly wristband. Clients stay longer, so you have time to add stronger pieces later. If a child or adult hates bitter polish or can’t use it at work, the band is a safe first step. Track bites, then layer in competing responses or reinforcement once the client is hooked.