On April 16th, a remarkable, and probably the first-of-its-kind meeting took place at UNICEF New York. Sixteen (no coincidence with the date) neuroscientists discussed and debated the influence of early experience on brain development and function. These scientists, who represent the super specialized fields of neuroscience, biology, epigenetics, psychiatry, nutrition, chemistry and child development, provided answers and insights into why early childhood development is so important for individual and societal development, and how this science could influence UNICEF’s approach to achieve results for children. Show And what happened when biology walked through the front door? It delivered 3 key messages to UNICEF. Message 1: The relationship between genes and environment is closer than we ever imagined. Genes predict our brain development but it is experience that sculpts it The complexity of the brain lies not only in the genes, but also in the interaction with the outside world, which shapes the brain accordingly. Aside from genetic predispositions, a child’s brain grows based on the experiences and opportunities that the brain is afforded to shape itself as the child grows. Message 2: The brain is complex because it is not a homogenous organ but a highly inter-related and integrated organ The oldest brain structures are the brainstem and cerebellum – that control our body’s vital functions of heart rate and breathing. The limbic brain, consisting of the hippocampus, amygdala and hypothalamus, is responsible for emotions, values and other unique functions that control so much of our human behavior. The cerebral cortex, the vast majority of which is the neocortex, and the newest area of the brain (in terms of our evolution), but also includes the pre-frontal cortex, is responsible for language, cognition, executive function, consciousness – in other words higher other thinking and imagination that influence individual learning and the development of culture and society more broadly. Message 3: Early Intervention is the answer: it becomes progressively harder to fix problems When our brain fails to get what it expects and needs, especially in certain critical or sensitive time periods, then the amount of effort required to set it back on track is enormous and optimal outcomes are less likely. For example, in the case of care and early stimulation, Charles Nelson’s research from the Bucharest Early Intervention Project (BEIP), has shown that when the placement of a child into a family (or “placement into high quality foster care”) occurred before two years of age, children more closely resembled typically developing children, but when placement occurred after 24 months, then placement into a family did not create positive outcomes. Early brain development and function is fascinating. This meeting only touched the tip of the ice-berg in what we have to learn and could use to improve the effectiveness of our programmes for young children around the world. After this meeting, there is one guest who is always welcome at UNICEF – biology! Pia Britto is the Senior Adviser on Early Childhood Development based in UNICEF’s headquarters in New York. Watch interviews with some of the experts from the meeting on brain development in children: How the brain develops from birth to the age of 3 years?At birth, the average baby's brain is about a quarter of the size of the average adult brain. Incredibly, it doubles in size in the first year. It keeps growing to about 80% of adult size by age 3 and 90% – nearly full grown – by age 5. The brain is the command center of the human body.
Where is brain growth most rapid from ages 3 6?During early childhood (ages 3–6), the frontal lobes grow rapidly. Recalling our discussion of the 4 lobes of the brain earlier in this book, the frontal lobes are associated with planning, reasoning, memory, and impulse control.
Which of the following gross motor skills is expected from a 3 year old child?Standing on one foot for 3 seconds. Walking up and down stairs without holding onto the railing, reciprocating (one foot on each step) Jumps over a line. Jumps forwards 2 feet.
What is happening in the brain development in first 5 years?During the first five years, a child's brain is at its most flexible, making this a critical period for learning and growth. Science tells us that children who face adversity in the first years of life are more at risk for experiencing lifelong effects from toxic stress.
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