DDVE design class. Humans and interfaces

I presented this material with my colleague Priidu Zilmer as part of a two-day design workshop for Tartu University’s Design and Development of Virtual Environments Master’s program. See www.ddve.ee for more info.

Transcript

1. Humans and interfaces
2. Consider your users • Gender, age, education, family • Mood • Time • Environment • Language skills • Other activities
3. Humans as devices • Input: visual, auditory, touch • Processing: cognition, memory • Output: mouse, keyboard, touchscreen
4. Model Human Processor Card, S.K; Moran, T. P; and Newell, A. The Model Human Processor: An Engineering Model of Human Performance.
5. Keystroke-level modeling
6. Fitts’s Law Time to target is a function of target distance and size.
7. Hick’s law The time to make a decision is a function of the number of choices. More choices = longer. • Oranges • Apples • Oranges • Apples • Cabbage • Carrot • Cherries
8. Useful timing constants • 50-100ms: “instantaneous” • 1-2s: common delay in networks • 10-15s: serious breakdown, forgotten context
9. Touch target size • Apple: 44x44 px on 164ppi (iPhone) • 0.7-1.0 cm
10. UI evolution: command line
11. UI evolution: GUI/WIMP
12. UI evolution: touch
13. UI evolution: voice
14. “Pictures Under Glass” Bret Victor. A brief rant on the future of interaction design
15. “Are we really going to accept an Interface Of The Future that is less expressive than a sandwich?” Bret Victor. A brief rant on the future of interaction design