Impact of Initial Response Biases in Marketing Research

This article is an original research article that investigates the use of self-report data in marketing research, focusing on initial response biases identified through daily diary data. The study highlights the convenience and cost-effectiveness of self-report data while addressing a significant bias where initial responses tend to be more extreme than those collected later. This bias can lead to misleading conclusions about consumer perceptions. The research analyzes daily diary data from a representative sample of U.S. adults, revealing a tendency for respondents to report higher TV viewing times on the first interview day compared to subsequent days. The findings underscore the necessity for repeated measures in consumer research to accurately assess the effects of initial reporting biases. The study also discusses the implications of these biases for understanding consumer behavior and suggests that marketing research should incorporate methodologies that account for such biases to improve data reliability.