Scientific research has shown that a child's first five years are critical for brain development and the formation of executive function and self-regulation skills. These skills are essential for learning, behavior, and adult outcomes. Such skills develop gradually from infancy through early adulthood based on experiences and relationships. Caregivers play a key role through responsive, reciprocal relationships in fostering these skills critical for lifelong success and well-being. Adverse experiences like neglect can impair skill development if not addressed.