Different rates of synapse production in different areas of the brain indicate the

Different rate of synapse production in different areas of the brain indicate that:
1. the different areas of the brain does not develop at the same time.
2.  there is difference in timing of development of different skills and behavior categories and 
3. different rate of synapses elimination occur in the brain.
The human brain start maturing before birth and continue to grow until about the age of twenty five. Even after this age, adult brain continues to mature as a result of the learning experiences that people are exposed to.