A show intended for a certain audience with a clearly defined demographic. Essentially, this means the audience may begin to watch the show at a certain age, but at some point will abandon it later, presumably in the future. This applies to many shows for children. The 'original' target audience simply outgrows the show. Such shows usually do not provide any deliberate treats for a Periphery Demographic. Because anyone watching will not do so for a long time, the showrunners can be tempted into repeating many premises they know the current audience will consider "new".