Brief 4-day mindfulness meditation has been found to improve not only emotional regulation and stress reduction, but also cognitive efficiency and working memory.
You have 3 jugs of different size – 8 oz, 5 oz and 3 oz. Someone fills the 8 oz jug full of juice and you have to divide it exactly between two people…
Matrices problems – a good measure of fluid intelligence, and important in the Mensa qualifying test
Can you read this effortlessly? Of course not if you’re not Chinese. See the post for the English version of this cognitive brain twister.