Final answer:
By around six months of age, an infant's color perception is nearly as good as an adult's, and it is also when they start to develop depth perception and an understanding of object permanence.
Step-by-step explanation:
Infants can perceive the same colors adults perceive by around six months of age. Their vision improves quickly after birth, and although newborns may have a preference for certain colors like red, it's not until approximately six months that their color perception is nearly as acute as that of an adult. This is also when they begin to develop depth perception, a critical aspect of visually understanding the world around them.
In the context of cognitive milestones, infants also start to develop an understanding of object permanence, which typically starts to form between 5 and 8 months old. This is the awareness that an object continues to exist even when it's not visible, pointing to the significant cognitive advancements taking place during this stage of infancy.
Understanding these developmental milestones helps caretakers and parents anticipate and support the growth in infants' physical and cognitive abilities as they reach these important stages of early life.