Answer :
When speaking of writing items, we often have to worry about whether the context in which survey items are presented has an influence on participants' responses. this is called Context-effects.
Survey method is "the observe of survey strategies".[1] As a field of implemented information focusing on human-research surveys, survey methodology research the sampling of person units from a populace and related strategies of survey records series, together with questionnaire construction and methods for enhancing the wide variety and accuracy of responses to surveys. Survey methodology targets contraptions or tactics that ask one or more questions that can or might not be answered. Researchers perform statistical surveys with a view closer to making statistical inferences about the populace being studied; such inferences depend strongly at the survey questions used.
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