As with the other fact-finding techniques, successful observation requires preparation. To ensure that the observation is successful, it is important to know as much about the individuals and the activity to be observed as possible. For example, ‘When are the low, normal, and peak periods for the activity being observed?’ and ‘Will the individuals be upset by having someone watch and record their actions?’ The advantages and disadvantages of using observation as a fact-finding technique are listed in Table 10.4.