A test screening, or test audience, is a preview screening of a film or television series before its general release to gauge audience reaction. Preview audiences are selected from a cross-section of the population and are usually asked to complete a questionnaire or provide feedback in some form. Harold Lloyd is credited with inventing the concept, having used it as early as 1928. Test screenings evolved from these early examples into a systematic practice. According to research from Kevin Goetz's book "Audience-ology: How Moviegoers Shape the Films We Love" (2021), by the 1970s, studios formalized the process as they invested more heavily in marketing and distribution strategies. Today, approximately 90 percent of widely released studio films undergo test screenings, with the average movie being tested three times.[1] Test screenings have been recommended for starting filmmakers "even if a film festival is fast approaching".[2]