Children are in Piaget's __________ stage when they are able to demonstrate reversibility and

A case study is an in-depth look at the symptoms and circumstances surrounding one person's mental disturbance.

Answer the following statement true (T) or false (F)

In support of the hypothesis that improved processing efficiency accounts for cognitive development, researchers have found that children's thinking and response time

A) are slower with maturation and increased experience. B) get faster with age. C) are determined by abilities to accommodate and assimilate new schemes. D) are more determined by genetic factors than by environmental factors.