The feedback you get when you finish a task: what we know

You finish something and tick it off. Perhaps the phone buzzes, plays a sound, or says “well done”. For some people that moment is the best part of a list. For others it is noise. The studies we could confirm do not test those signals. They say more about how feedback lands, and about tasks left open.

What the evidence says

The kind of praise matters. In six studies with fifth-grade children, praise for intelligence had more negative consequences for achievement motivation than praise for effort ¹. After failure, those praised for intelligence showed less task persistence, less enjoyment and worse performance than children praised for effort ¹.

Positive feedback may land more quietly for some. In a community sample of 391 adolescents aged 10 to 15, those with elevated ADHD symptoms showed enhanced sensitivity to rejection by peers, in brain measures and in self-report, and a reduced brain response to acceptance ². This was feedback from other young people, not from a list or an app.

Touch and sound are not the same for everyone. In a laboratory study, 67 children with ADHD had a higher threshold for detecting touch stimuli than typically developing children, which the authors thought was likely driven by IQ and inattention ³. Their tactile processing differed on some tasks, but not all ³. Separately, 53 adolescents with ADHD scored higher than 50 without it on a scale of misophonia, a reduced tolerance to certain sounds ⁴.

What is not finished stays with you. A meta-analysis found that unfinished work tasks were related to more thoughts about work during time off, most strongly for rumination ⁵. This is an association, not proof of cause.

A plan can quiet an unfinished goal. In several experiments, unfulfilled goals caused intrusive thoughts and poorer performance on unrelated tasks ⁶. Letting participants make specific plans for those goals eliminated these effects ⁶.

What we don’t know

None of these studies tested a tick, a sound or a small reward at the moment a task is done. So they cannot say whether such feedback raises motivation.

None of the studies above involved adults with ADHD. The three ADHD studies were in children and adolescents, and one measured symptom levels in a community sample, not a diagnosis ². The praise studies were also in children ¹. Carrying any of this over to adults, or from people to software, is a guess.

Things to try

No study tested these steps. The findings only loosely suggest them.

• Say what you did, not what you are. “I sent the form” is a fact. “I’m so organised” is a verdict. The research looked at praise given to children, not at how adults talk to themselves ¹.
• Choose your own signal. If you miss a vibration, or a sound grates, change it or switch it off. The touch and sound studies did not test phones.
• Give the unfinished task a time. Write down when you will do what is left. In the experiments, a specific plan removed the intrusive thoughts that unfulfilled goals had caused ⁶. Those were laboratory tasks, not to-do lists.