Abstract
The integration of digital media into children’s daily lives has become a defining feature of contemporary development, with devices now present from infancy through adolescence. While substantial research has examined behavioral correlates of screen time, the neurological implications of continuous digital engagement remain underexplored and theoretically fragmented. This conceptual paper undertakes a narrative review of five developmental domains: attention, emotion regulation, reward processing, sensory integration, and ecological development. Its purpose is to identify what remains unknown about how sustained digital exposure may affect developing neural systems. Drawing on the framework of sensitive periods and experience dependent plasticity, the paper argues that the timing, duration, and nature of digital engagement may matter as much as its presence. Semi structured interviews with pediatricians, developmental psychologists, and pediatric neurologists inform the framing of clinically meaningful questions. The paper does not claim proven harm. Instead, it proposes an integrated framework for future research that distinguishes between normal developmental variation and patterns warranting closer observation. By assembling existing theoretical perspectives from ecological systems theory to multisensory integration, this work offers a foundation for clinicians, researchers, and policymakers to identify what to measure, at what ages, and with what thresholds.
Keywords: child development; digital engagement; neuroplasticity; sensitive periods; attention; emotion regulation; reward processing; sensory integration; ecological systems theory; clinical research framework