He’s thinking about squid movements.
Buy a candy without waiting, or do you want to wait a while and get two sugars? Of course, if you’re not a very hungry child, you’ll have nothing to wait for. The purpose of this test, called the “Marshmallow Test”, is to separate children who act with their impulses and children who act with thought.
Inspired by this test, scientists wanted to measure which of the Squid’s behavior depended on using shrimp instead of Marshmallows.
According to the paper published in the Royal Society Open Science, most squid were found to prefer the second choice.