The Psychology of Web Performance
summary
Argues that front end accounts for 80–90% of end‑user response time and backs it with lab and field work using EEG headsets, facial‑action coding and real‑user throttling; finds slowed pages force up to 50% more concentration, produce 26% frustration spikes, and 500–1000ms added latency depresses return rates for weeks. Shows progressive JPEGs can depress pleasure versus baseline images, users wait for hero images (8s loses attention), and cites SpeedCurve, WPO Stats and the book Time Is Money.
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chapters (8)
- 0:00Introduction
- 3:17Journey into web performance
- 11:41Human time perception
- 23:52Memory flow and interruptions
- 32:03User speed expectations
- 39:05Slowness and behavior
- 45:47Performance measurement mistakes
- 49:34Delightful user experiences
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