Produces qualitative data that is a rich source of detailed information about all aspects of a group’s activity. It may be difficult to get in, stay in and get out. It may be the only practical way of gathering data from some groups. It produces data that can be regarded as highly valid, producing a true picture of behaviour. The findings from a small group may not be representative of other groups. The research may not be reliable. Would another observer have arrived at the same conclusions? Researchers gain an insight which is not gained through surveys, for example: As I sat and listened, I learned answers I would not have had the sense to ask. It can produce quantitative data. The observer effect. The presence of the observer may have changed the behaviour of the group. The findings may not be objective. The researcher may be biased or become so close to the group that she / he has ‘gone native’. A covert observation is secretive and may deceive the group by not telling them that they are being observed. It can be used as an additional method to help support or question some of the findings gained form a survey. It can be used for the purpose of triangulation. It may be difficult to record what is happening as you may have to rely on your memory and record things later.