The construct validity of “television viewing” is developed and explicated. It is suggested that while this concept is usually used as a strict behavioral variable, many different constructs are implied by it. The construct validity of television viewing can be derived from a conceptualization of what it is in television which, when viewed, or exposed to, interacts with human behavior and attributes. Four such conceptualizations are illustrated, each leading to a different construct of “viewing”: (1) television as a social-situational factor involving choice behavior between activities; (2) television as a transmission of a content repertoire, implying decision-making regarding messages; (3) television as a source of content-messages dealing with recall, comprehension, and attitude change; and (4) television as a “language” pertaining to the processes of encoding messages in the service of extracting knowledge.