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Have you ever forgotten a word but somehow still known things about it? Maybe you’re thinking, “It definitely starts with an S.” Or: “It’s two syllables.” Or another word keeps popping into your head that sounds almost right. That frustrating feeling has been studied for decades, and one of the most famous experiments comes from psychologists Roger Brown and David McNeill in 1966. They wanted to study what we now call a tip-of-the-tongue state: the feeling that you know a word and are incredibly close to retrieving it, but for some reason you just can’t produce it. So they gave 56 Harvard students definitions of relatively uncommon words and asked them to retrieve the answer. Sometimes students knew the word immediately. Sometimes they had no idea. But other times they entered that very specific state of: “I KNOW this. It’s right there.” And that’s where things got interesting. Even when participants couldn’t retrieve the actual word, they often knew pieces of information about it. They could sometimes identify its first letter. They often had information about how many syllables it contained and where the stress fell. And they produced other words that sounded similar to the missing word. In one example, the target word was “sextant,” an instrument historically used for navigation. People stuck on the word produced alternatives like “sextet,” “sexton,” and “second.” All wrong. But not completely random. Brown and McNeill found that people experiencing genuine tip-of-the-tongue states correctly identified the first letter of the missing word 57% of the time. In other words, failing to retrieve a word doesn’t necessarily mean every part of that word has disappeared from memory. You may still have access to fragments of its form—the beginning, its approximate length, its sound, its rhythm—without being able to retrieve the whole thing. That’s part of what makes the tip-of-the-tongue experience so frustrating. Your brain is giving you enough information to feel like the answer is incredibly close. Just not enough to actually say it. So the next time you’re sitting there saying, “I KNOW this person’s name starts with an M…” you might actually know more than you think. How often does this happen to you? #memory #PsychologyFacts #research #linguistics #psychology