GLOBAL / LOCAL ATTENTION · 24 TRIALS
Report either the large letter or the small letters that build it.
Play 24 balanced GLOBAL/LOCAL and congruent/conflicting trials. The focus rule changes every three trials.
HOW TO PLAY
Read the focus prompt above the pattern: GLOBAL or LOCAL.
For GLOBAL, identify the large H or S silhouette formed by the complete pattern.
For LOCAL, ignore the silhouette and identify the repeated small H or S letters.
HIERARCHICAL LETTERS
Each pattern contains two levels of information at once. The large silhouette is the global level; the repeated building blocks are the local level.
Standard mode balances both focus rules and includes equal congruent and conflicting trials, so one visual level cannot always predict the answer.
ENTERTAINMENT CHALLENGE
This browser game is for entertainment and personal practice. It is not a validated neuropsychological Navon task or clinical assessment.
Screen size, font rendering, viewing distance, practice, and input method can all change a result.
QUESTIONS
It is the large H or S silhouette created by the full arrangement of small letters.
It is the small H or S repeated many times inside the large silhouette.
GLOBAL and LOCAL alternate every trial, the answer window shrinks, and one error or timeout ends the run.
No. It is a recreational attention game, not a medical or diagnostic assessment.