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Week 3: Designing a questionnaire
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Decided on a subject area Performed a literature search Started to think about your research question and hypotheses This week: Designing a questionnaire to test your hypotheses.
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Sampling Consent Question types Answer types Questionnaire design Coding
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Who to ask: your target population How many people: 20 (5 per group member) Avoid a biased sample, e.g. if asking about drinking behaviour in men and women: ◦ Don’t just ask women ◦ Don’t just ask people in a bar ◦ Don’t just ask tee-totallers
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You must adhere to a strict code of ethics in your research: http://www.bps.org.uk/the-society/code-of-conduct/ Participants must: ◦ give consent to take part ◦ not be coerced into participating ◦ be free to withdraw at any time Administering your questionnaires already has ethics approval.
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Participants create their own answers ◦ “What is your age?” ◦ “Are you a smoker?” ◦ “What are your favourite TV programmes?” ◦ “How much do you like biscuits?” To make data analysis easier DO NOT use open-ended questions that allow participants to write long responses
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Experimenter provides participants with options ◦ Choice of category:- Are you a smoker? Never smoked / Current smoker / Ex-smoker ◦ Likert scale: - How strongly do you agree with the statement “I like biscuits” 1 2 3 4 5 Strongly Disagree Disagree Neutral Agree Strongly Agree ◦ Checklists: Circle the TV programmes that you watch ◦ Rating scales: How much do you like this drink, on a scale of 1- 10? ◦ Ranking: Order these sports in terms of how much you like them
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Open-Ended ◦ Exploratory ◦ Useful when you can’t cover all the possible answers ◦ Impractical in terms of analysis Closed-Format ◦ Easy and quick to fill in ◦ Doesn’t matter how literate or articulate you are ◦ Easy to code, record, and analyse results quantitatively ◦ Easy to report results
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If the answer to the question is a number that represents an amount, e.g. ◦ IQ score ◦ Height ◦ How long it takes to complete a jigsaw puzzle ◦ Likert scale responses ◦ Ranks Top tip: Calculating a mean makes sense with continuous data (but not with categorical data)
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Please give an approximation of the number of alcoholic drinks you normally consume on a Saturday night: … Drinks. Please indicate your agreement with the following statement: ◦ I feel that I should drink less on a Saturday night □ □ □ □ □ 1 2 3 4 5 Strongly Disagree Neutral Agree Strongly Disagree Agree
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If the answer to the question is: ◦ a word “Yes” ◦ a sentence “I think that biscuits are tasty” ◦ a description “ Physics student” ◦ a code that represents a category 1 = undergraduate, 2 = postgraduate NB: Numerical codes can be used to represent categorical responses BUT this does not transform categorical data into continuous data.
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In which town were you born? ……. Please indicate your gender: □ Male □ Female Which actor is the hunkiest? □ Brad Pitt □ Johnny Depp □ Orlando Bloom
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“Please indicate your age:” ◦ Continuous: … Years ◦ Categorical : □ 18-25 □ 26-30 □ 31–35 □ 36–40 etc. ◦ Categorical :... Years □ Older than 60 Years “How many days a week do you usually exercise?” ◦ Continuous : … days ◦ Continuous : □ 1 day □ 2 days □ 3 days □ 4 days □ 5 days □ 6 days □ 7 days ◦ Categorical : □ 1 day □ 2 days □ 3 days □ 4 days □ 5 days or more This can be applied to a number of data
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Keep it short and simple Start with an introduction/ welcome message Allow not applicable responses to all possibly relevant questions Say thank you to your participants
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Go from general to particular Go from easy to difficult Go from factual to abstract Do not start with demographic and personal questions (put these at the end)
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Start with a title Assure anonymity ◦ Assign each questionnaire a number instead of asking for names Avoid personal and sensitive questions Be aware that you may bias answers simply by being there Try to avoid biased wording ◦ e.g. “Would you agree that the death penalty is a bad idea?”
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Giving numbers to categories in categorical data is called coding ◦ e.g. “Yes” becomes 1 and “No” becomes 2 Codes can be allocated either before the question is answered (pre-coding) or afterwards (post-coding) You should agree on codes with the rest of your group before you enter any data We will come back to this in Week 5
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Think about your sample Create your questionnaire Pre-test the questionnaire (if practical) Conduct interviews Enter data Analyse the data Write your research proposal Write your lab report
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2 Categorical Hypotheses: - ◦ Should be tested with 2 categorical questions ◦ e.g. “Men prefer to buy fast food at Burger King, while women prefer to buy fast food at McDonalds” 2 Continuous Hypotheses: - ◦ Should be tested with a categorical question and a continuous question ◦ e.g. “Males consume a larger quantity of alcoholic beverages per week than females”
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Put together your group questionnaire ◦ 10 questions in total ◦ 5 Categorical questions ◦ 5 Continuous questions Try to consider your hypotheses while creating the questions Get a tutor to check it over
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Try to have asked 20 people to fill out your questionnaire Top tip: If psychology students are a suitable sample, swap questionnaires with each other
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