Personally Administered Questionnaires are conducted when the aim is to collect information within a very short period of time. The best conditions under which the survey can be conducted are considered when the survey is confined to a locality where the company is also capable to assemble the teams and conduct surveys. If your questionnaire is complex or the topic of the research is difficult to understand then it is always preferable to go for personally administered questionnaires because they can avoid any confusion at the spot. If the researcher has few resources to collect the data then these questionnaires provide an access to less expensive information. In a very short duration these surveys can be conducted and they do not require much time. In conclusion, these questionnaires can be conducted if researchers have very short time period, more detailed information is required and nature of questionnaire is complex.