The document discusses several factors that affect child development, including parenting styles, media influences, peer influences, and physical activity. It describes different parenting styles (authoritative, authoritarian, indulgent, neglectful) and their effects. Studies discussed found that violent media can increase aggressive behavior in children, while educational media like Sesame Street can improve behaviors. Peer influence can be positive by increasing feelings of acceptance, but negative peers may promote poor behavior and decrease school value. Physical activity is also impacted by mimicking peers. Overall, peer groups are important for development if a range of friends are socialized with.