[[Random Selection for Questionnaires]]
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en:create:random_questionnaire [25.01.2020 16:46] – adminen:create:random_questionnaire [25.03.2021 20:35] – [Random Selection for Questionnaires] sophia.schauer
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 In a survey project you can create several questionnaires (**Assemble Questionnaire**) -> **Create new Questionnaire** or **Manage Questionnaires**). If the participant opens the [[:en:survey:url|link to to questionnaire]], they can be randomly assigned to one of the questionnaires. In a survey project you can create several questionnaires (**Assemble Questionnaire**) -> **Create new Questionnaire** or **Manage Questionnaires**). If the participant opens the [[:en:survey:url|link to to questionnaire]], they can be randomly assigned to one of the questionnaires.
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 +**Warning:** If you implement randomization across different questionnaires, systematic dropouts can lead to an (sometimes significantly) uneven distribution in the completed questionnaires. Use only a questionnaire with [[:en:create:randomization]] of the stimulus to reliably fill the experimental groups evenly (see also the following note).
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 +**Warning:** If the experimental groups work in different questionnaires, it is necessary to pay special attention to ensure that the questionnaires are identical except for the treatment. For example, if a change is made in only one of the questionnaires after the pretest, this can lead to confounding and the inability to use the data. The "normal" [[:en:create:randomization]] is less error-prone here.
  
 **Note:** For experiments it is usually much easier (!) to create only one questionnaire and vary the stimulus with a small PHP code ([[:en:create:randomization]]). **Note:** For experiments it is usually much easier (!) to create only one questionnaire and vary the stimulus with a small PHP code ([[:en:create:randomization]]).
en/create/random_questionnaire.txt · Last modified: 25.03.2021 20:49 by sophia.schauer
 
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