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Write revision cards for the following topics:. Advantages & disadvantages of questionnaires Advantages & disadvantages of using structured interview to administer questionnaire Definition + advantages & disadvantages of structured interviews
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Write revision cards for the following topics: • Advantages & disadvantages of questionnaires • Advantages & disadvantages of using structured interview to administer questionnaire • Definition + advantages & disadvantages of structured interviews • Definition + advantages & disadvantages of semi-structured interviews • Definition + advantages & disadvantages of unstructured interviews
Advantages and Disadvantages of Questionnaires • Self Completion • Where the respondent answers at leisure and posts back or has it collected
Advantages and Disadvantages of Questionnaires Advantages • Inexpensive – no interviewer to pay • Large samples can be covered • Fast and efficient analysis can be made • Answers can be quantified • Postal q’res allow a greater geographical area to be studied • No interviewer bias • Fill in at leisure
Advantages and Disadvantages of Questionnaires Disadvantages • Low response • Often well below 50% for postal q’res • Therefore not representative • Respondents might not understand the q’s and there is no one to ask • Answers may be incomplete, illegible or incomprehensible • Closed q’s can limit what respondents want to say
Advantages and Disadvantages of Questionnaires • Structured Interviews • Here the interviewer goes through the questions and records responses
Advantages and Disadvantages of Questionnaires Advantages • Response rate is good • Interviewers can help to explain things • This can result in more information • Respondents who can’t read or write can be included
Advantages and Disadvantages of Questionnaires Disadvantages • More expensive – training and paying interviewers • Cost increases if the sample is spread over a large area • Interviewer bias can affect responses
Structured interviews • Simply questionnaires read out by an interviewer • The same q’s are read to everyone in the same order
Semi-structured interviews • The questions are in order but the interviewer has the right to ask the respondent to elaborate on answers
Unstructured interviews • These are more like a conversation • Rather than set questions there are a list of topics to cover • Q’s are open and the respondent has space to answer as fully as they want
Group interviews • The interviewer usually meets 8-10 people at one go • Focus groups are a type of group interview where the group discusses various pre-set issues
Structured interviews - advantages • Many are the same as questionnaires • Good for • :facts • :Comparable data • :quantitative data • less interviewer bias than ones below
Structured interviews - disadvantages • Limit answers • Can’t elaborate
Semi-Structured interviews - advantages • Shares ads of structured interviews • Plus interviewer can probe for more info • Adds depth to interview
Semi-Structured interviews -disadvantages • Loss of standardisation & comparability • Probes make each interview slightly different • More chance of interviewer bias than above
Group interviews - advantages • Focus groups are becoming more popular • Can produce rich qualitative data
Group interviews - disadvantages • Individuals can be influenced by the group • Individuals may feel that they haven’t had a chance to give their own view
Unstructured Interviews- advantages • Sensitive issues can be researched • Interviewee is put at ease • Interviewee can open up more • Not restricted to pre set answers • Answers can be developed further • Interviewer can ask further questions
Unstructured Interviews- advantages • Gives rich indepth data • Seen as more valid • Good for opinions, values and attitudes • Skilled interviewers can help explain and draw out more info than other types of interview
Unstructured Interviews- disadvantages • Interviewer bias is more of a problem • Age, gender, ethnicity etc of interviewer may affect reponses • Social desirability – interviewees want to present themselves in a certain way • Truth – some tell lies intentionally
Unstructured Interviews- disadvantages • Some genuinely forget details • Validity can be questioned • Comparability is difficult with the qualitative data produced • Difficult to code and quantify data • Difficult to see correlations