Self-experiments

Four instruments from a century of psychology, rebuilt for your own desk. Every protocol runs entirely in the browser: nothing is transmitted, nothing leaves the device. At the end stands your finding — stamped, copyable, filable into the dossier.

Stroop test

Reading cannot be switched off: asked to name the ink colour of a word, you read the word anyway — and when GREEN stands there in red ink, two processes collide.

≈ 3 MIN · 4 PRACTICE + 40 TRIALS · Attention

Serial position

Where a word stands in a list helps decide whether it stays: the start and the end survive, the middle falls through.

≈ 3 MIN · 15 WORDS + RECALL · Memory

Müller-Lyer illusion

Two lines of equal length, one with outward, one with inward fins — and the second looks shorter.

≈ 2 MIN · 4 TRIALS · Perception

Posner cueing

Attention moves faster than the gaze: when something flashes at the edge, it is already there before an eye twitches.

≈ 3 MIN · 4 PRACTICE + 40 TRIALS · Attention

Change blindness

When something changes in view, its motion normally gives it away.

≈ 2 MIN · 3 SCENES · Perception

False memory

Memory does not store, it builds: fifteen neighbours of a word that never appears are enough for many to have “seen” it afterwards.

≈ 3 MIN · 15 WORDS + 13 CARDS · Memory

Anchoring

A number that obviously has nothing to do with the matter pulls anyway: in 1974 Tversky and Kahneman let a wheel of fortune fall on 10 or 65 before their participants’ eyes, then asked for the share of African states in the United Nations.

≈ 1 MIN · 1 ESTIMATE (BY DESIGN) · Judgement

Implicit association

Some pairs go together more easily than others: when FLOWER and PLEASANT share a key, the hand sorts faster than when FLOWER falls together with UNPLEASANT.

≈ 4 MIN · 2 PRACTICE + 2 COMBINED BLOCKS · Judgement

→ Legend or finding?