Module teaching and integrating language skills lesson 1

Factors affecting the percentage of returned questionnaires

	Length of the questionnaire.
	Reputation of the sponsoring agency.
	Complexity of the questions asked.
	Relative importance of the study as determined by the potential respondent.
	Extent to which the respondent believes that his responses are important.
	Quality and design of the questionnaire.
	Time of year the questionnaires are sent out.

The questionnaire is said to be the most "used and abused" method of gathering information by the lazy man. because often it is poorly organized, vaguely worded, and excessively lengthy.