This is choice overload: sometimes, having more options makes choosing harder. Here are three sketches that explain it, using jam, gates, and clothes.
One idea. Three ways to picture it.
Two grocery tasting tables stand side by side. Twenty-four jams pull a thick crowd that lingers and looks; six jams pull a thinner crowd, yet many more leave holding a jar.
At a wall of turnstiles the crowd bunches between lanes, weighs which to pick, and drifts back out. Where a single gate stands open, the same people walk straight through in a calm single file.
Under a rail crammed with hangers, someone stands stuck — nothing to wear. Beside it, a curated few, and an outfit chosen in a moment.
In one jam-tasting study, a table with 24 flavours drew more interest, while a table with six led to more purchases. The useful idea: adding options can make a decision harder. It depends on the choice and the person; fewer isn’t always better.
Sometimes the kindest menu is a shorter one.
The research. Iyengar & Lepper (2000) 'When Choice is Demotivating', J. Personality & Social Psychology — the jam-tasting field experiment (24 vs 6).