How user behavior has changed on search results pages from 2005 to 2015: Google shows fewer links per square inch above the fold and users spend less time looking. Net-net is that users look at fewer links.
Hotchkiss says the new patterns, which vary depending on, for example, whether a search is navigational or informational, are a direct result of the changes Google has been making. The eyes still go to upper left at first, because Google has not dropped its mission of providing the most relevant results at the top of the page. What’s changing is what appears in that top section.