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A focused working-memory exercise: is this the same as the one shown a few steps ago?
Items appear one at a time. For each one, answer whether it is the same as the one shown a set number of steps earlier. There is no time limit.
How to play
Items appear one at a time. For each one, answer whether it is the same as the one shown a set number of steps earlier. There is no time limit.
What it trains
Keeping track of information while it changes: counting, mental arithmetic, following moving objects.