Core Knowledge

Topics: Brain, Nervous system, Neuron Pages: 1 (260 words) Published: December 1, 2012
Core Knowledge
Using what you learned about brain development in Chapter 4, explain why intensive intervention for poverty-stricken children starting in the first 2 years has a greater long-term impact on IQ than intervention at a later age.

A child’s brain development is very critical in its first 2 years. A childs brain develops dramatically during the first 2 years. “During the first two years neural fibers synapses increase at an outstanding pace. Because of developmenting neuron requires space for these cognitive structures a surprising aspect of brain growth is that as synapses form many surrounding neurons die 20-80 percent, depending on the brain region.” When a child is living in a low poverty environment it affects the child’s brain since the neurons are not being stimulated by their caregivers. Looking at a caregiver who does not interact with a child a young age the child will have less interaction with a person. This correlates with a child’s IQ. When neurons are seldom stimulated they lose their synapses in a process called synaptic pruning. About 40 percent synapses are pruned during childhood. “About half of brains volumes consist of gilal cells which are responsible for myelination. The Development through the lifespan book talks about children who are adopted have a greater chance to better nutrition and health. The book also talks about stress. Chronic stress of early deprived orphanage rearing disrupts the brains capacity to manage stress, with long-term physical and psychological consequences. Reference

Berk, L. (2009) Development through the lifespan. Allyn & Bacon; 5 edition. 2009
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