By what age can infants tell the difference between arrays containing different numbers of small quantities of items?

Question

Quizplus · Accepted Answer

Infants are able to distinguish between arrays containing different numbers of small quantities of items by around 6 months of age. Research shows that by this age, infants can detect changes in the number of items in an array, suggesting that they have some understanding of quantity.

By What Age Can Infants Tell the Difference Between Arrays