The Fisher Price Magnet Set and Synesthesia

In 1971, a new toy started finding its way into homes all over the United States. This was a set of refrigerator magnets that consisted of the letters of the alphabet and each one was colored. For synesthetes born in the decade after the magnets existed, this color pattern reached 15%. But for those who grew up before the magnets existed,. not a single one of them had this pattern.