What is the earliest age at which infants can differentiate two objects from three objects?
A) 1 month old
B) 5 months old
C) 1 year old
D) 2 years old

Question

Quizplus · Accepted Answer

Studies have shown that infants as young as 5 months old are able to distinguish between two and three objects. This ability is known as subitizing and is thought to be an innate ability in humans. Infants are not thought to develop this ability until around 5 months old because it requires the ability to mentally represent and compare quantities.

What Is the Earliest Age at Which Infants Can Differentiate