First of all I would like to recognize the works of the late William Playfair, the father of modern charts and graphs, who was a Scottish engineer and political economist. He hand colored charts and graphs that allowed for more people to interpret complex numerical and statistical information without the need for special skills.
For clarification, whenever I am referencing human-computer interaction (HCI), I am not excluding the Computer-Human Interaction (CHI), User-Centered Design (UCD), Man-Machine Interface (MMI), User-Interface Design (UID), User-Experience Design (UXD), Human Factors (HF) nor ergonomics. In fact, I will reference everything identified when speaking more specifically of usability. Designing information systems that people actually want to use. A usable a product or service must consider, at a miniumum, these five basic dimensions:
* Error tolerance and prevention [few and non-catastrophic errors]
The importance of these dimensions as mentioned in Jakob Nielsen’s book, Usability Engineering, differ depending on the your particular context and target users. The next post will begin covering cognitive principles as they apply to UI/UX design.
- Human-Center Design Model [ISO 13407]
- User-centered Design is driven by research
- Dunn and Dunn Learning-Style Model
- Atkison and Shiffrin Model
- Chuncking using 7 +/- 2
- Difference Threshold
- Weber’s Law of Just Noticeable Difference
- Gestalt Principles of Perception
- Perception of Graphic Statistical Displays – William S. Cleveland’s Task Model