A simple test that uses a raisin and a plastic cup can predict how well a toddler will perform academically at age eight, researchers say.
The toddlers were given a raisin that was placed under an opaque cup within easy reach. After three training runs, toddlers were asked to wait until they were told (60 seconds) they could touch and eat the raisin.
Children who were born very prematurely were more likely to take the raisin before the allotted time.
