What is the primary function of a "people meter" in the collection of TV audience data?

The primary function of a "people meter" is to log viewing habits electronically. This sophisticated device monitors and records the programming that viewers watch throughout the day, providing valuable data about audience size, demographics, and viewing patterns. By capturing detailed information on what programs are being watched and for how long, advertisers, networks, and producers can make informed decisions regarding programming and advertising strategies.

The people meter typically requires the cooperation of households that participate in audience measurement studies, as it is essential to collect accurate and representative data about television consumption across different demographics. The gathered information enables networks to assess the popularity of shows and can influence how they schedule programming in the future to maximize viewership and revenue.