Demos
Interactive simulations built to better understand psychology.
Classic tasks and instruments, rebuilt to run in the browser. Try one yourself, then read why it was devised in the first place.
- Neuropsychology1
- Cognitive Psychology2
Neuropsychology~12 min
Halstead–Reitan Battery
Two tasks from the real battery: the Category Test, where you work out a hidden rule from bell and buzzer feedback, and the Finger Oscillation Task, where you compare dominant vs. non-dominant hand speed.
Why this matters
Built by Ward Halstead and Ralph Reitan to localise brain damage in an era before imaging — the error count fed an Impairment Index that was among the first attempts to put a number on brain dysfunction.
Each demo opens as its own full-screen tool. Use the link inside it to come back here.