Website performance significantly impacts user experience, often leading to frustration and anger when pages are slow or unresponsive. Beyond psychological effects, poor performance can increase usage costs and modern websites require a nuanced approach to capture continuous user interactions.

This session explores behaviors like rage clicks and cursor thrashing, emphasizing metrics that reflect user emotions and overall satisfaction. We’ll discuss the complexities of performance measurement, highlighting the need to look beyond single metrics. Ideal for those interested in understanding the business impact of site performance and the biases affecting user perceptions.

A non-exhaustive outline includes:

- Cognitive biases
- Correlating frustration and business outcomes
- Delight and frustration
- Measuring emotion
- Rage, missed, and dead clicks
- Wild mouse
- Scrandom
- Backtracking
- Median lethal dose (LD50)