Motivated by memory tests for chimpanzees. Tapping from 1 to 9 in order. Once 1 is tapped, rest of numbers will be covered. So memorize the location of each number.
Motivated by memory tests for chimpanzees. Tapping from 1 to 9 in order. Once 1 is tapped, rest of numbers will be covered. So memorize the location of each number.