Table 1.

Screen Media Domains: Context, Content, and Amount

Screen media domain	Definition
Content	The message delivered from the media that youth view or interact with, which can be further categorized into: • purpose (e.g., educational or entertainment) • programming content (e.g., age-appropriate or not, such as content with portrayal of sexual behaviors, violence, drug use, profanity) • commercial versus noncommercial (e.g., with or without advertisement)
Context	Circumstance in which the viewing occurs including: • who is present with the child • the location it is taking place (e.g., living room, bedroom, on-the-go, at school) • when it is occurring (such as time of the day, daylight/non-daylight) • how it is delivered (i.e., television, DVD, computer, tablets, or handheld gaming consoles) • whether screen media use occurs in relation to other activities (e.g., while eating or doing homework)
Amount (“dose”)	Frequency and duration that youth are engaged in screen media use, including: • how much of each media type is used • how often it is used (i.e., unique episodes or continuous), • whether or not use occurs simultaneously with other screen media (i.e., multitasking)