In addition to the introduction section of a report, researchers also cite literature describing their study's methods and procedures. Researchers use the literature to provide models for how to design their studies and to collect and analyze their data, For example, when researchers decide to use a certain instrument f collecting data, they will explain where in the literature they found this instrument. They also use literature to justify the study’s research design or decisions about how to select people as participants. This literature may include other published studies that used the same procedures or writing where scholars discuss the procedures that can be used in the literature adds rigor to a research report because it shows that the researcher used established procedures and did not just “make things up”