As infants start to crawl, stand, and walk, their increased physical mobility leads to more cognitive development. Near the end of the sensorimotor stage (18-24 months), infants reach another ...

Tanner stages are a tool used by healthcare providers to evaluate development in puberty. They detail five specific stages of physical change in puberty, including genital, breast, and pubic hair ...

these stages are known as the Tanner stages or, more appropriately, sexual maturity ratings (SMRs). They serve as a general guide to physical development, although each person has a different ...

Children also become able to apply logical, concrete rules to physical objects. However, they cannot yet do the same thing for abstract concepts. In this final stage of cognitive development ...

The sensorimotor stage is the first of the four stages of Piaget’s theory of cognitive development ... with their hands and understand how their physical actions affect their environment.