While Nathan Witthoft was earning his PhD at Massachusetts Institute of Technology, he met a woman with color-grapheme synesthesia, a neurological condition where people see letters and numbers in ...

Most people with synesthesia can't tell you exactly why they perceive the letter M as purple and not orange, or a high C-sharp as bright yellow and not blue. For one group of synesthetes, though, ...

They are a ubiquitous childhood toy: alphabet fridge magnets. You may remember some from your own childhood, though they probably weren’t your most beloved of games. But for some people, especially ...