Intriguingly, the researchers found that the dopamine hit, arising from initial curiosity, could even enhance the memory of incidental information that had no direct relevance to the primary question. To demonstrate this, they had presented random faces alongside the answers to the questions and, an hour later, checked whether the participants still recognised the faces. The analyses showed that the participants were far more likely to remember the face if it had accompanied one of the more interesting trivia questions that had spiked their curiosity.
