Search engine users click the results listings' top entry much more often than can be explained by relevancy ratings. Once again, people tend to stick to the defaults.
G. Feng, T. Liu, Y. Wang, Y. Bao, Z. Ma, X. Zhang, и W. Ma. Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR \textquotesingle06, ACM Press, (2006)
A. Borisov, M. Wardenaar, I. Markov, и M. de Rijke. The 41st International ACM SIGIR Conference on Research &\#38; Development in Information Retrieval, стр. 45--54. New York, NY, USA, ACM, (2018)