In a survey of more than 400 U.S. college students, Primary Research found
"The higher the grade point average the less information for research papers was obtained from search engines such as Google or Yahoo."
Thanks to Christian for alerting us to the description of the survey found on ResourceShelf:
which included the following:
"The report presents data from a survey of 400+ American college students about how they go about doing research in their college libraries. The 150+ page report gives extensive data on student use of major search engines, wikipedia, library databases, book collections and other library resources. The study also gives detailed information on how their professors advise them to use the library, and how comfortable they feel about their research skills and how helpful librarians have been in helping them in their research."
The full report is available from http://www.primaryresearch.com/