This document discusses the importance of family environment on child development. It defines family environment as the circumstances and social climate within families. A positive family environment with love and mutual support can motivate children and help develop their personality, while a negative environment with neglect can hinder development. Families now come in various forms but ideally involve intimate contact and shared norms. Healthy family functioning requires undertaking roles like childcare and communication, with children nurtured and resources provided. Good communication involves openly expressing ideas even when differing from others. The document concludes that leadership and rules from parents combined with individual responsibility can create a productive family environment that profoundly impacts cognitive development.