Slides from Tammy Everts’ 2013 presentation on the neurological effects of poor performance on our websites’ visitors reveal some startling facts. Right out of the gates, Tammy cites a 2010 EEG study of users navigating a site on a connection throttled from 5MB to 2MB. The study found that participants had to concentrate up to 50% harder and reported a negative brand association afterward.

Visit “Mobile Web Stress: Understanding the neurological impact of poor performance”