memtry
One Changed
Study the symbols. They vanish, then return with exactly one swapped. Find the impostor.
How to play
- Memorize the symbol grid
- After the blank, one symbol has changed
- Tap the changed tile
- 3 lives; each level adds symbols
What it trains
Attention. Change blindness is one of psychology's humbling findings: with a brief blank between two views, people miss large changes, including experiments where the person they were talking to was swapped mid-conversation. The blank removes the motion cue your attention normally rides on, so you only catch what you actually encoded.
Rensink et al., 1997; Simons and Levin, 1998.
One honest tip
Encode symbols in pairs with a made-up link. Linked items report a break-in; loose ones do not.