Module 3 Notes
Section 1
Section 2
Section 3

Brain Changes

Section 1, Article 2 - During the early childhood years the brain undergoes significant changes in myelination, which is the process in which myelin coats the axon. Myelin is an important fatty substance that aids in transmitting nerve impulses across neurons and serves to protect the neuron. One impact of this change is an increase in hand-eye coordination and improved motor control (). By age 6 a child’s brain will weigh 90% of what they will weigh when they are adults and by this age they can perform a variety of activities that require several thoughts to occur in rapid succession (; ; ). Children at this age can typically see an object and immediately identify what it is, catch and thrown a ball, and write their ABC’s and numbers in proper sequence ().

The most rapid brain development for children between ages 3 and 6 involves the frontal lobe, an area of the brain that is responsible for maintaining attention to tasks and (). Though poor impulse control is common in young children it can be problematic in adulthood.  is also seen at this age. An increased inclination for preservation results in the ability to maintain a given thought for an extended period of time and continue with successive actions. This is evident when children say the same word or phrase repetitively (). Due to the maturation of the  in early adolescence these phenomenal usually stop by adulthood.

Body Development
Cognitive Processes