For example, for the first dozen years of life, children can learn languages very easily, as opposed to later in life. By providing warm, responsive care, you strengthen the biological systems that help him handle his emotions. A strong bond doesn't just reassure him, it actually affects the biological systems that adapt to stress. Scientists have shown that in stressful situations, children who have experienced a secure attachment to a parent are more adaptive and produce less cortisol, a stress hormone which affects metabolism, the immune system and the brain. Excessively high levels of cortisol alter the brain by making it vulnerable to processes that destroy brain cells, and just as importantly, by reducing the number of connections in certain parts of the brain.
Brain development is non-stop.
That's one reason why high quality child care is so important-whether the caregiver is a relative, neighbor or child care provider. The person responsible for taking care of your child while you're at work is helping to shape the experiences which allow the brain to develop. From the child's perspective, every important caregiver is a potential source of love and learning, comfort and stimulation. Children need experiences with important caregivers who are sensitive to their emotional and physical needs. By providing consistent and responsive caregiving, you can ensure that your child will have the best opportunity for healthy emotional and social development.