Laws of Perception · gestalt
Law of Uniform Connectedness
Playable Play this law (~3 min)or keep reading below ↓
Elements visually connected — by a line, a shared bar, a touching edge — are perceived as more related than elements merely near or similar. A literal connector is the strongest grouping signal of all, which is why steppers and flows draw the line.
Where it comes from
Stephen Palmer and Irvin Rock named uniform connectedness in 1994, arguing it comes before the classic Gestalt cues: infants track connected objects as single things long before they group by similarity. The physical world trained this — a chain, a rope bridge, beads on a string are one object because their parts are joined. Draw a line between two interface elements and the brain files them as one unit.
Origin: Palmer & Rock's 1994 connectedness studies
In the wild
- Checkout steppers
Cart — Shipping — Payment joined by a line reads as one journey with stations, not three unrelated labels.
- Org charts & flow builders
Automation tools connect boxes with arrows; nobody needs a legend to see what feeds what.
- Sliders
The track physically connects the min, the handle and the max into a single control.
Further reading
Don't just read it — feel it.
Play the 3-minute game and let your own reactions prove the law.
Play the lesson