Feedback as an incentive for responding to a mail questionnaire
By: Donald E. Powers and Donald L. Alderman
Series: Research report / Educational Testing Service -- RR-81-7; Research report (Educational Testing Service) -- RR-81-7
Publisher: Educational Testing Service
Published: 1981
Place of publication: Princeton, NJ
Language: eng
Subjects: Mail surveys; Response rate
Notes: Includes bibliographical references (p. 7).