HQ

Left-Right Body Bias Lab

map your side preferences + tap-speed asymmetry

Two parts: six quick body-quirk questions, then a 20-tap left/right reaction drill. Together they sketch your personal side-bias profile — a normal human spectrum, not a verdict.

No-fibs — what this lab is

The six preference questions are modeled on real laterality inventories (like the Edinburgh Handedness Inventory, a genuine research tool), but this is a self-report quiz plus a toy reaction drill, not a clinical assessment. Side preferences are a normal spectrum, not a score of ability. The tap test measures 10 taps per side in one sitting — noisy by design; coffee, mouse position, and luck all move it.