A. Kohn Berning, Carol et Jacoby, Jacob, Patterns of Information Acquisition in New Product Purchases, Journal of consumer research Consumer research;JCR , 47(6), 2021, pp. 18-22
Using a process methodology to examine information acquisition behavior, it was found that significant differences existed between the amount of information requested from the "friend" source by innovators about new products. Additionally, personal information sources were consulted after impersonal sources.