Why are some people so much more effective at learning from their mistakes? After all, everybody screws up. The important part is what happens next. Do we ignore the mistake, brushing it aside for the sake of our self-confidence? Or do we investigate the error, seeking to learn from the snafu?
(A new study detailed in Psychological Science) is premised on the fact that there are two distinct reactions to mistakes, both of which can be reliably detected using EEG. The first reaction is called error-related negativity (ERN). It appears about 50 milliseconds after a screw-up . The second signal, which is known as error positivity (Pe), arrives anywhere between 100-500 milliseconds after the mistake and is associated with awareness. It occurs when we pay attention to the error, dwelling on the disappointing result. In recent years, numerous studies have shown that subjects learn more effectively when their brains demonstrate two properties: 1) a larger ERN signal, suggesting a bigger initial response to the mistake and 2) a more consistent Pe signal, which means that they are probably paying attention to the error, and thus trying to learn from it.
(note: This finding has a practical implication. Studies show that when students are praised for their intelligence rather than their hard work, they will choose easier paths in order to maintain that success. But students who are told their success is the result of hard work are more likely to select more difficult pathways. They possess greater confidence that a similar effort of hard work will bring them continued success - Stephen Goforth).
Praising kids for their innate intelligence — the “smart” compliment — misrepresents the psychological reality of education. It encourages kids to avoid the most useful kind of learning activities, which is when we learn from our mistakes. Because unless we experience the unpleasant symptoms of being wrong — that surge of Pe activity (in the brain) a few hundred milliseconds after the error), directing our attention to the very thing we’d like to ignore — the mind will never revise its models. We’ll keep on making the same mistakes, forsaking self-improvement for the sake of self-confidence.
Jonah Lehrer writing in Wired Magazine