Chen investigated the impact of star ratings and sales volume on people’s book purchasing decisions and found that subjects relied heavily on ratings and sales volume.
Results showed that subjects’ purchasing decisions were influenced by online recommendations; however, the strongest effect was when the source of the recommendation was a recommender system. Senecal and Hantel also found an effect for product type: recommendations for experience products (products whose qualities cannot be determined prior to purchase, e.g., wine) were significantly more influential than recommendations for search products (products whose qualities can be determined prior to purchase, e.g., car).
Źródło: Effects of Popularity and Quality on the Usage of Query Suggestions during Information Search, CHI 2010 Exploratory Search Proceedings
Warto zajrzeć: Presentation Slides dla Effects of Popularity and Quality on the Usage of Query Suggestions during Information Search