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ReactionAbout 4 min

Two-hand coordination and reaction

Two-hand coordination and choice reaction

Two lamps light at once, one on each side. Answer both - left hand A S D, right hand J K L - before the time runs out. Keep up and the time shortens; the last 45 seconds run at a fixed fast pace. 20 seconds of practice, then three and a quarter scored minutes. The exam equipment Chilean operators use is not published; this reproduces the construct - two hands answering at once under time pressure - not any device.

Free run: the first 20 seconds

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Before you start
Left lamps A S DRight lamps J K L