Preference for progressive delays and concurrent physical therapy exercise in an adult with acquired brain injury.

Researchers worked with one adult who had a brain injury. The adult was doing physical therapy exercises. During each exercise the team gave two choices. One choice gave a small reward right away. The other choice started with no reward, then gave bigger rewards if the adult waited longer.

The team wanted to see if the adult would pick the waiting option. Picking the wait option shows self-control.

The adult picked the progressive-delay option on nearly every trial. That means he chose to wait for bigger rewards. He showed strong self-control even while doing hard rehab work.

The choice-making kept him engaged in the therapy task.

Lancioni et al. (2011) later gave post-coma adults microswitches to pick preferred stimuli. Both studies show adults with brain injury can make choices and like having control.

Tam et al. (2011) also found adults with profound disabilities picked highly preferred stimuli when given two microswitch options. The idea is the same: give real choice, people pick the richer option.

Griesi-Oliveira et al. (2013) looks opposite at first. Their rat study showed longer delays hurt learning. The difference is species and goal. Rats were learning a new lever press. The human already knew the rehab task and simply chose when to get his reinforcer. Self-control, not acquisition, was the target.

You can build self-control in adults with brain injury by letting them choose a progressive-delay schedule. Embed brief choice breaks into rehab or daily living tasks. Two simple options—now versus bigger-later—can keep clients working longer and harder without extra staff prompts. Try it next session with any preferred item: music, snacks, or praise.