Abstract:
A special study consisting of a survey among 326 housewives, has shown that the friendliness effect in product tests is minimised if the method below is used: The interviewer shows three packs with the same contents, but with different code numbers/letters. The housewife is given the suggestion that two of the packs contain a now product and the third pack is the product she is always using, without identifying the packs. The housewife herself selects the pack she will test, presumably under the impression that she has a chance of one third to get the product she is always using. A control group, where all packs contain the product she is always using, interviewed with the same questionnaire, provides the level of the bias which always remains. This level is the zero level for the results of the product test for the new product. With this system the friendliness-bias can be reduced considerably. In this study the reduction of the bias was about 50%.
This could also be of interest:
Research Papers
TV advertising pre-testing
Catalogue: Market Researchers Look At Advertising: A Collection of ESOMAR papers 1949-1979
Author: Roger S. Parkyn
 
June 15, 1980
Research Papers
TV advertising pre-testing
Catalogue: ESOMAR Congress 1976: Research That Works For Today's Marketing Problems
Author: Roger S. Parkyn
 
September 1, 1976
Research Papers
Post-testing and pre-testing consumer behavior caused by advertising
Catalogue: Market Researchers Look At Advertising: A Collection of ESOMAR papers 1949-1979
Author: Jan Stapel
Company: NIPO
June 15, 1967
