7–9 November 2016: Conference & Tutorials
9–10 November 2016: Training
Amsterdam, The Netherlands

Psychology of performance; or, Why performance matters

Denys Mishunov (Digital Garden AS)
14:40–15:20 Monday, 7/11/2016
UX performance UX optimization G102/103 Audience level: Intermediate
Average rating: ****.
(4.86, 21 ratings)

Prerequisite knowledge

  • A basic understanding of performance optimization

What you'll learn

  • Understand a not-often-spoken-about perspective on performance
  • Learn how to employ psychology in performance optimizations


Load a page in less than a second; reduce the number of server requests; keep your CSS and JS merged and compressed to keep them under 50 kilobytes. . .these are just a few among technical solutions and recommendations we get to tackle performance issues. But there is one catch: your users don’t care about absolute values in kilobytes, milliseconds, and number of requests. Performance is not about mathematics. Performance is about perception. Perception is what makes a site with very few requests nevertheless feel slow, while a site that delivers search results during tens of seconds can feel fast enough for your user. User’s perception of your website’s speed is the only true performance measure.

The time is ripe to understand performance from the user’s perspective. Join Denys Mishunov to explore the brain, perception, neuroscience, and psychology. Oh, and performance, of course. Drawing on his “Why Performance Matters” series of articles in Smashing Magazine, Denys reviews techniques for perceived performance optimization and offers examples of cases when performance might be not what the users expect.

Photo of Denys Mishunov

Denys Mishunov

Digital Garden AS

Denys Mishunov is a Norway-based frontend developer at Digital Garden AS. Denys is both an art school graduate and an engineer and is passionate about psychology, physics, history, and drawing. In his day-to-day job, he enjoys getting to the heart of the matter of things and processes. Originally on the CSS side of development, for the last few years, Denys has been building JavaScript applications, still breaking CSS, abusing HTML, and working with performance optimizations of pretty much all aspects of the frontend toolset, including fastname.no and uniweb.no. Cycling, photography, and impressionist paintings are just a few things that can hold his attention.