When undertaking an observational study, the impact of the researcher’s presence on those being observed has to be considered. The knowledge that they are being observed may affect participants’ behaviors (Watson, Booth, & Whyte, 2010). To minimize the effect of the researcher’s presence on observed behavior,the first author spent time on the unit building a rapport with the unit staff for 3weeks before starting data collection. This strategy also allowed the researcher to familiarize her self with the unit layout and allowed staff members to get to know her. During data collection, the researcher observed for signs of habituation (reverting to normal behavior). For example, after a couple of observational sessions, participants began to leave the door of the drug room open on a night shift. Information about signs of habituation were recorded in the field notes.