The truth behind the viral meme about reading jumbled words
You have likely seen the internet meme claiming your brain can read scrambled text as long as the first and last letters remain fixed. While the phenomenon is real, the famous Cambridge University study cited in the meme is a complete myth.
The viral phenomenon, often called 'typoglycemia'—a non-scientific buzzword—suggests that the human mind possesses a phenomenal power to decode scrambled text. This idea likely stems from a 1999 letter to the magazine New Scientist by Graham Rawlinson of Nottingham University. Rawlinson noted that randomizing letters in the middle of a word had little to no effect on comprehension, provided the first and final two letters remained in their original positions.
However, the internet version of this fact is highly inaccurate. Research shows that letter order does indeed matter for readability. One study tracking eye movements found that switching letters internally, such as the 'e' and 'a' in 'sweat', decreased reading rates by 11%. The impact is even more severe when the disruption occurs at the start of a word, causing a 36% drop in reading speed, or at the end of a phrase, which slows reading by 26%.
The ability to decode jumbled text relies heavily on context and the brain's drive for speed. Marta Kurtas from the University of California, San Diego, suggests that context is the primary driver, allowing the brain to pre-activate areas corresponding to expected words. Because the brain processes all letters in a word simultaneously, it uses them as mutual context. This allows us to recognize words even when numbers replace letters, as the letter-like appearance overrides the character's actual status in a predictable sequence.
Source: Does Letter Order Matter?
