Screen exposure has become a routine part of childhood due to smartphones, tablets, television, computers, and digital learning platforms. While digital media can support education and communication, excessive or poorly supervised screen time may affect children’s cognitive, language, emotional, social, sleep, and physical development. This article examines the impact of screen time on child development using a simulated observational research framework. Evidence suggests that high screen exposure, especially in early childhood, is associated with delayed language development, reduced attention span, poor sleep quality, behavioral problems, reduced physical activity, and impaired social interaction. Current guidance emphasizes age-appropriate, supervised, high-quality content rather than unrestricted screen use. WHO recommends no sedentary screen time for 1-year-olds and no more than 1 hour daily for children aged 2 years, while the American Academy of Pediatrics emphasizes family-based media plans rather than one universal time limit. (World Health Organization)