research tools and resources
	Mail research advantages: Low cost per response. No opportunity for interviewer to influence respondent's answers. Greater feeling of anonymity Respondents have time to think about their answers. Can include supporting materials, such as illustrations and samples. A broad sample of intended universe can be reached. Can obtain response rates between 50% and 75% with multiple follow-ups.
	Mail research disadvantages: Potential for errors to occur during data-entry. Respondent may have trouble completing questionnaire if instructions are not clear. Questionnaire may not reach intended recipient. Limited ability to use branching. (return to resources menu)
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