An 18 month old baby and experiencing the world through senses is in Piaget's sensorimotor stage. The sensorimotor stage is the development of our senses such as, sense of sight, hearing, feeling, tasting and smelling. The sensorimotor stage is developed through 18 to 24 months of age.
Caffeine is usually not dangerous when used carefully. Depressants are a group of drugs that slow down the activity in the brain and body. and coffee helps you stay awake.