advantages of questionnaires

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    • no need to recruit and training interviewers or observers, respondents complete and return questionnaires
    • quick and cheap way of gathering data from large amounts of people
    • advantages of questionnaires
        • when each research is repeated, a questionnaire identical to the original is one is used
        • with postal questionnaires, there is no researcher present to influence the respondents answers
        • if we do find differences between answers, we can assume its due to real differences between the respondents and not due to different questions
        • useful for testing cause-and-effect relationships between different variables
        • can make statements about possible causes of low achievement for example and predictions about which children are more likely to achieve
        • because we can identify causes, positivists are attracted to questionnaires
          • positivists take scientific approach
        • positivists favour because they're unbiased, values can't get in the way
        • postal questionnaires are completedat a distance and involve no personal contact between researchers and rspondents
        • collect info from large amounts of people, results stand better chance of being representative of population
        • researchers who use questionnaires tend to pay more attention to the need to obtain a representative sample
        • allow us to make accurate generalisations about population
        • fewer ethical issues
        • may ask intrusive questions,respondents are usually not forced to answer them
        • researchers should gain the respondents consent  and they have the right not to answer any of the questions


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