Some problems in collecting continuous diary panel data from a rapidly changing universe

Date of publication: June 15, 1972

Author: John R. Lawford

Abstract:

The Baby Panel is an example of the panel technique being very successfully adapted to measure a market where buyers remain for a relatively short period of time and yet during that time their characteristics change dramatically. One might summarise panel techniques as offering two different types of measurement: - Firstly the study of changes over time in the behaviour of individuals or groups of individuals. Secondly the study of changes in the pattern and trends of the total market over time. This paper describes very briefly how these objectives have been met by the Baby Panel since January 1967 and it concentrates on the problems we have encountered, some of which have been solved satisfactorily, others, at present defying really satisfactory solutions.

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