Understanding what makes a good questionnaire Know What

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Understanding what makes a good questionnaire? Know… What is bias. Understand… What makes a

Understanding what makes a good questionnaire? Know… What is bias. Understand… What makes a bad question. Be able to… Write a good question or improve a question to make it ADVANCED/COMMUNITY/5. 3 better.

Why use a questionnaire? Questionnaires are often used to obtain information from a group

Why use a questionnaire? Questionnaires are often used to obtain information from a group of people. We use them because questions can be targeted to get the information you need. They can also be done in several ways; § By post or mail § By phone § Face to face ADVANCED/COMMUNITY/5. 3

What makes a good questionnaire? Order Start with basic details and move on to

What makes a good questionnaire? Order Start with basic details and move on to more difficult questions. Clear questions Simple language, appropriate to the age of the people answering the questions. Relevant to what you are investigating. Not Personal Try and avoid questions that need very personal or embarrassing answers. ADVANCED/COMMUNITY/5. 3

What makes a good questionnaire? Easy to answer Open questions – allow people to

What makes a good questionnaire? Easy to answer Open questions – allow people to write anything. Closed questions – restrict answers by giving options. Keep answer boxes clear and simple and don’t have gaps or overlaps. Under 20 − 29 30 − 39 − 49 Over 50 Avoid answers 20 that are not specific 40 such as “not much” or “a lot”. ADVANCED/COMMUNITY/5. 3

What makes a good questionnaire? Avoid bias Don’t ask questions that push people towards

What makes a good questionnaire? Avoid bias Don’t ask questions that push people towards an answer. Starting a question with; isn’t it true that…? or don’t you agree that…? is trying to make people say what you want. Think about where the survey is being done. For example asking people who their favourite football team is outside a football stadium on a match day, will not give you a fair set of data. ADVANCED/COMMUNITY/5. 3

Question 1 How much sleep did you get last night? □ Less than average

Question 1 How much sleep did you get last night? □ Less than average □ About average □ More than average Is this a well designed question? ADVANCED/COMMUNITY/5. 3

Reason why question is poor The question is not clear- different people are likely

Reason why question is poor The question is not clear- different people are likely to have different ideas of what is meant by average! ADVANCED/COMMUNITY/5. 3

Improved question How much sleep did you get last night? □ Less than 8

Improved question How much sleep did you get last night? □ Less than 8 hours □ About 8 hours □ More than 8 hours ADVANCED/COMMUNITY/5. 3

Question 2 Do you agree that we need at least 8 hours of sleep

Question 2 Do you agree that we need at least 8 hours of sleep each night? Is this a well designed question? ADVANCED/COMMUNITY/5. 3

Reason why question is poor This is a leading question – the question is

Reason why question is poor This is a leading question – the question is leading people to answer yes. ADVANCED/COMMUNITY/5. 3

Improved question Do you think that we need at least 8 hours sleep each

Improved question Do you think that we need at least 8 hours sleep each night? □Yes □Not sure ADVANCED/COMMUNITY/5. 3

Question 3 What do you sleep on? ADVANCED/COMMUNITY/5. 3

Question 3 What do you sleep on? ADVANCED/COMMUNITY/5. 3

Reason why question is poor This question is ambiguous: it could have more than

Reason why question is poor This question is ambiguous: it could have more than one meaning. The question is meant to be about sleeping position, but could be answered “a bed”! ADVANCED/COMMUNITY/5. 3

Improved question What do you usually sleep on? □Back □Front □Left Side □Right Side

Improved question What do you usually sleep on? □Back □Front □Left Side □Right Side ADVANCED/COMMUNITY/5. 3

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