🎯 Clock Vigilance Test: The Mackworth Task

💡 How to play — A hand steps around a 60-mark dial, one mark every 0.75 seconds, for 90 seconds. Twelve times in that stretch it skips a mark and jumps two instead — press only then. Almost nothing happens for most of the run, and that is the whole point: this is the classic clock task used to measure how long attention holds when there is nothing to react to. Catching a skip is worth up to 100 points depending on how fast you spot it, while a press with no skip behind it costs 100. The window counts as only a fifth of the total time, so pressing at random loses about 63 points every time and hammering the button ends at zero. Maximum 1200.