Nature/ Nurture

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Nature/ Nurture

Nature/ Nurture

A. Identify the development of the current debate on nature/ nurture showing how the relevant theories have been developed and refined over time.

New research on early brain development provides a wonderful opportunity to examine how nature and nurture work together to shape human development. Through the use of sophisticated technology, scientists have discovered how early brain development and caregiver-child relationships interact to create a foundation for future growing and learning. (Healy 2004: 35-42)

At birth, the human brain is still preparing for full operation. The brain's neurons exist mostly apart from one another. The brain's task for the first 3 years is to establish and reinforce connections with other neurons. These connections are formed when impulses are sent and received between neurons. Axons send messages and dendrites receive them. These connections form synapses (Figure 1).

As a child develops, the synapses become more complex, like a tree with more branches and limbs growing. During the first 3 years of life, the number of neurons stays the same and the number of synapses increases. After age 3, the creation of synapses slows until about age 10.

Figure 1: Neurons mature when axons send mesages and dendrites receive them to form synapses

Between birth and age 3, the brain creates more synapses than it needs. The synapses that are used a lot become a permanent part of the brain. The synapses that are not used frequently are eliminated. This is where experience plays an important role in wiring a young child's brain. Because we want children to succeed, we need to provide many positive social and learning opportunities so that the synapses associated with these experiences become permanent. (Healthy Child Care America2009: 85-105)

How the social and physical environments respond to infants and toddlers plays a big part in the creation of synapses. The child's experiences are the stimulation that sparks the activity between axons and dendrites and creates synapses. Infants and toddlers learn about themselves and their world during interactions with others. Brain connections that lead to later success grow out of nurturant, supportive and predictable care. This type of caregiving fosters child curiosity, creativity and self-confidence. Young children need safety, love, conversation and a stimulating environment to develop and keep important synapses in the brain. During the first 3 years of life, children experience the world in a more complete way than children of any other age. The brain takes in the external world through its system of sight, hearing, smell, touch and taste. This means that infant social, emotional, cognitive, physical and language development are stimulated during multisensory experiences. Infants and toddlers need the opportunity to participate in a world filled with stimulating sights, sounds and people. (Gilkerson 2008: 66-68)

Early development does not always proceed in a way that encourages child curiosity, creativity and self-confidence. For some children, early experiences are neither supportive nor predictable. The synapses that develop in the brain are created in response to chronic stress, or other types of abuse and ...
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