Silver dollar inducement for previous non-returners of Grecian 2000 questionnaire

Date of publication: November 18, 1974


Out of 769 questionnaires sent out to Grecian 2000 users in Project A only 327 were returned, even after a reminder letter was sent out. As this represents a response rate of only 42.52%, some concern was expressed that if non-responders' attitudes had also been sampled, a different the overall picture might have emerged. A separate study had shown that the offer of an American Silver Dollar was a powerful motivator for the return of self- completed questionnaires. Accordingly, it was decided to recontact just under half of the A. 476 non-responders, using an A.S.D. as a reward for the return of the questionnaire. In fact, 202 non-responders were re-sent the questionnaire, along with the A.S.D. offer, in order to sample the attitudes of non-responders towards Grecian 2000. 

About this collection: 
Peter Cooper (1936-2010) was co-founder of Cooper Research & Marketing, later CRAM International, with his wife Jackie French. Cooper studied Clinical Psychology at the University of Manchester where he became a Lecturer in the early 1960s. He became involved in conducting commercial Motivational Research and by 1968 opened Cooper Research & Marketing in Manchester. Cooper was one of the key pioneers of what we now know as Qualitative Research. CRAM opened its London office in Wimpole Street in 1970 and moved to 53 St Martins Lane, WC2N 4EA, in 1972 where it remained until Peter's passing in 2010. The company changed its name to CRAM International in around 1985/86, reflecting the increasingly international nature of its work. The CRAM/Peter Cooper Archive Collection, which includes commercial research reports and early academic papers, has been preserved by Peter's children, Diana, Helen and Jonathan, and his colleague Simon Patterson. The scanning of the Archive has been supported by ESOMAR, AMSR, Peter's colleague Dr Alan Branthwaite & family, the Cooper family, and QRi Consulting. The CRAM/Peter Cooper Archive Collection is managed by QRi Consulting. The CRAM logo and CRAM International name are Registered Trademarks and the property of QRi Consulting.

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