The participants were given a test to see how well they could recall what they saw. Initially, they could recall about the same, regardless of whether they were in pain or not -- but then the researchers waited one year and asked them again. After the participants had finished yelling in terror upon seeing the researchers' faces again (we're guessing), it turned out that objects seen at the highest end of the pain threshold were recalled much more easily than those at the lower end of the scale. As the scientists put it in the abstract to their study and in the lyrics to the industrial rock album we hope they recorded, "pain significantly enhanced memory."
iStock/Jacob Ammentorp Lund
"I'll never forget the day we met. She, beautiful in her summer dress. I, literally on fire."
So there you have it. If you're the type of person that has trouble remembering people's names, just carry a lighter with you and be prepared to whip it out during introductions. If nothing else, it will ensure that they remember you. [Editorial Note: Please do not do this.]