The decision whether or not to disguise a questionnaire is primarily influenced by the extent to which it is believed that a respondent will provide biased answers if the research sponsor and/or purpose is known.

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Disguising a questionnaire can be a strategy to reduce response bias, as respondents may alter their answers if they know the research sponsor and/or purpose. Therefore, the decision to disguise a questionnaire is primarily influenced by the potential for biased answers due to this knowledge.

The Decision Whether or Not to Disguise a Questionnaire Is