Screen time
Screen time is the time a person spends using devices with screens, including televisions, computers, tablets, and phones.
Sleep and technology: The ways digital devices and media interact with sleep timing, duration, and quality. Evening screen use can delay bedtime and expose users to stimulating content or light.
Parental mediation of children's media use: Caregivers' strategies for guiding, restricting, or discussing children's media use. Families use schedules, rules, and conversation to shape children's screen habits.
Media use: Engagement with communication and entertainment media, including print, broadcast, and digital formats. Screen time is one measurable part of the broader concept of media use.
Screen time measurement: The methods used to estimate or record how long people use screen-based devices. Measurement choices determine whether concurrent devices and background use count.
Sedentary behavior: Waking behavior involving very low energy expenditure while sitting, reclining, or lying down. Screen use often occurs while sitting, but its health effects depend on the activity and context.
Digital media in education: The use of digital tools and media to support teaching and learning. Educational screen use can serve learning goals that recreational-use limits do not address.
Screen media: Media presented through electronic visual displays, including television, computers, and mobile devices. The kinds of screens included determine what a screen-time total captures.
Digital trace data: Data automatically recorded as people interact with digital systems and services. Device logs can record use more precisely than memory-based estimates, but miss context.
Digital eye strain: A group of eye and vision symptoms associated with prolonged use of digital displays. Long sessions can coincide with eye discomfort, blurred vision, and headaches.
Pediatric preventive care: Health services that monitor children's development and prevent illness through routine care. Clinicians may ask about media habits alongside sleep, activity, and family routines.