Determining capacity in this regard can be tricky. First, whether the person determine has the physical capacity to use the phone: can the person reach the phone, hold it, and hear well enough it? Asking the person to use to place a call to the doctor to reconfirm an appointment is one method of evaluating behavior. Another is to ask what the person would do in an emergency. Then ask the per son to give the numbers of the persons he or she would need to call. Document the per son's responses. When conducting assessments for IADLs, there is the risk that people will give false-positive responses-stating they can perform a function when in fact they may have difficulty performing it. Observation and gathering information from several sources help the care manager pinpoint areas of strength and limitations.