Researcher Richard Wiseman studies how to be lucky. He says lucky charms do work, but only because people believe in them. Some people believe in them so much, they use voo doo to try to influence the outcomes of trials.
Rachel Williams writes in the Pennsylvania News that Wiseman found that carrying a luck charm had no effect on whether or not people chose winning lottery numbers, despite the fact that 30% of the people he tested thought their luck had improved. At the end of the study, 70% said they’d continue to carry the lucky charm with them.