According to piaget's stages of cognitive

Well what’s the question? i guess the only thing i can tell you is his theory focuses not only on understanding how children acquire knowledge, but also on understanding the nature of intelligence.1 piaget's stages are: sensorimotor stage: birth to 2 years. preoperational stage: ages 2 to 7. concrete operational stage: ages 7 to 11.

Stimulants speed up the central nervous system.