Face to Face Interviews
| Sampling Error
and Bias – these can be reduced by rigorous methods, by
call-backs and by achieving high contact rates (eg. of the order
of 70%). |
Cost –
expensive if robust methods used (where sample of named
residents selected for interview (in-home or doorstep)). Cheaper
if street-based interviewing used (but less rigorous, even with
quota sampling). |
| Respondent
– face-to-face interviewing allows personal interaction with the
respondent (more so than telephone or postal). Probing for
further information is possible. Better for getting more
detailed and / or qualitative information. |
Fieldwork
– requires trained team of interviewers and good fieldwork
management. |
| Literacy –
probems overcome by personal questioning. Need for bi-lingual
fieldwork team in some cases. |
Bias –
this can arise from the respondent or the interviewer. |
| Design –
Questioning and routing can be more complex; opportunity to use
additional materials, show cards etc. |
Time –
takes time in planning, informing residents prior to interview
and for fieldwork phase. More difficult in winter periods |
|
