What are advantages and disadvantages of observation?

• Major advantage of observation is that it allows behaviour to be seen & studied in its natural setting.

• People from outside or those already working in a setting can be trained to use it.

• One disadvantage of observation is that events being observed are subject of bids due to the feelings of the people involved as well as of the observers.

• Generally day-to-day activities in a given setting are fairly routine which can go unnoticed by the observer.

• Mere presence of the observer may contaminate the results/observations.