Multi-Object Tracking - Multi-Object Tracking

Multi-Object Tracking is the classic attention research paradigm - track 3-4 targets through chaotic motion.

Several dots are highlighted briefly. All dots then turn the same color and move randomly. After motion stops, you identify the originals.

Healthy adults reliably track 3-4 objects. Beyond that, accuracy collapses - the famous capacity limit of visual attention.

The trick is parallel tracking: do not chase each dot serially, hold them all in one wide attentional spotlight.

Pylyshyn & Storm (1988) introduced MOT and demonstrated the 3-4 object capacity limit, which has held up across decades of research.

MOT capacity correlates with working memory span, sport expertise, and shows training transfer to attention-demanding real-world tasks.

Your capacity to hold several moving targets in mind at once without losing track of which is which.

This task isolates sustained, parallel attentional tracking: keeping individual indexes bound to specific objects as they move and intermix with identical distractors. Because all dots look alike, you cannot rely on appearance or memory of position; a good result reflects how many distinct spatial pointers your attention can maintain and continuously update in real time.

Unlike static span tasks that test how many items you can store, tracking taxes attention that must move with the targets, so speed and trajectory crowding matter as much as number. Real-world correlates include keeping watch on several children at a playground, monitoring opposing players on a pitch, or scanning multiple vehicles while merging in traffic.

Push one variable at a time so tracking stays the bottleneck, not guessing.

Begin with two or three targets at a comfortable speed and a manageable dot count. When you can identify all targets reliably across several rounds, raise difficulty along a single axis: add one target, increase dot speed, or add distractors. Focus on smoothly distributing attention across all targets rather than fixating on one favourite.

A common mistake is staring at a single spot and trying to track everything through peripheral vision; tracking works best when you spread a broad, even focus and let your gaze rest near the group centre. Avoid silently labelling targets with words or numbers, since that strains memory and breaks down once dots cluster and cross.

Read your score as a tracking capacity at a given difficulty, not a fixed number.

Your result reflects how many targets you correctly identified for the speed and dot count you faced. Research using this paradigm suggests most people track roughly four independent objects under moderate conditions; identifying all targets at higher speeds or counts is strong. The most useful signal is your own trend across sessions at a fixed difficulty.

Tracking is highly state-dependent: fatigue, divided attention, alcohol, and a small or distant screen all lower scores, while a fresh, focused session lifts them. A single run also will not tell you whether errors came from too many targets, excessive speed, or a brief lapse, so vary one condition to find your actual limit.

1. A few dots are highlighted briefly - these are your targets.
2. All dots then turn the same color and move randomly.
3. When motion stops, click the original targets.
4. Use peripheral vision - track the whole scene at once.