Anita Woolley, Thomas Malone, and their team developed a test for measuring group intelligence. The group intelligence test involved selecting a diverse set of tasks specifically designed for group collaboration. The approach involved choosing tasks that aligned with key categories in social psychologist Joseph McGrath's framework for group tasks. A wide array of tasks that groups encounter in real-world scenarios were represented. To ensure a balanced representation of participants, the study recruited groups from the general public through various channels, including public websites like Craigslist, rather than relying solely on university students. This approach aimed to provide a broader cross-section of the community and maintain similarity to the general U.S. population's intelligence distribution as determined by short individual intelligence tests.