Abstract:
A âpanelâ is a study in which information is collected about the same people or organisations over an extended period of time. A âdiary panelâ is a panel where the information is collected by asking the participants to keep a diary. A âreadership diary panelâ is a study in which information about all reading of a selected list or class of publications is collected from each participant over a period of time by means of a diary.
