As a gerontologist assessing whether ones behaviour is normal ar abnormal I would take a very detailed history using the six most frequently used assessment techniques. This would include an interview, a self report, a report from others, a psychophysiological assessment, direct observation and a performance based assessment. I would try to be considerate of many life span factors such as biological history, psychological history, and sociocultural factors. Since older adults have had a whole life of various experiences, it is important to consider all of this when trying to determine whether the individuals current behaviour is normal or abnormal. In the physical assessment a recent medical work up would be included because, for example irritability