Sensorimotor organization: According to the famous developmental psychologist, Jean Piaget, infants learn, from birth to approximately age two, to coordinate all their sensory experiences (sights, sounds, etc.) with their motor behaviors.
This part of the ECI tests the child's level of sensorimotor skills: visual attention, reaction to touch, self-regulation of basic body functions, tolerance for various body positions, and activity level depending on various situations.
Between 18 months to three years of age, toddlers have reached the "sensorimotor" stage of Piaget's theory of cognitive development that involves rudimentary thought.
Sensorimotor stage (infancy): In this period, which has six sub-stages, intelligence is demonstrated through motor activity without the use of symbols.
With mentally retarded infants, the treatment emphasis is on sensorimotor development, which can be stimulated by exercises and special types of play.