Multiple Object Tracking keep several identities alive through motion
A game-first Practice, date-stable Daily, fast Sprint and fixed-form Benchmark with exact replay, true pause and transparent tracking evidence.
Run evidence
Exact trial review
Chance-adjusted recall is a local task descriptor against random target selection, not a percentile, diagnosis, IQ score or population norm.
More · forms, Practice setup & local record
Benchmark form
Each form has 3 warm-ups + 18 scored trials: six each at track 2, 3 and 4, balanced across 0.9×, 1.0× and 1.1× motion playback.
Practice setup
Measurement contract
Benchmark targets highlight for 700 ms, then become identical. Scored-trial correctness is withheld until the run ends. Leaving the page or a severe frame stall flags the evidence instead of silently treating it as Clean.
Daily archive
Historical Daily uses the selected date exactly.
Recent runs, bests & Daily streak
Runs stay in this browser. Daily is separate from Today’s 6.
Track identity, not location
All objects become visually identical before motion. Final selection tests whether the original target identities survived movement among distractors.
Repeatable A–E forms
Fixed benchmark forms keep target load and speed balance stable, so retests can compare like with like instead of changing the difficulty recipe.
Clean vs flagged
Focus loss and severe frame stalls remain visible. The site does not convert this task into a clinical score or universal attention percentile.
Advanced · V0.223 Tracking Load & Interference Lab
Tracking Load & Interference Lab
Separate target load, speed, duration and crowding/decoy pressure. Fixed sets are repeatable evidence; Adaptive follows your weakest local family. Scores stay task-specific and are not clinical or population norms.
Fixed A–E · 40 trials each
Each frozen set contains exactly 8 trials from each of the five evidence families. Complete A–E cleanly to build Clean-5.
Path 50
Ten progressive trials per family, from baseline tracking to higher load, speed, duration and interference.
Adaptive 20
60% of the next block comes from your weakest local evidence family; the rest rotates through the full set.