It's hard work to make a user interface that's easy to use. The end result may seem obvious to an outsider, but ease-of-use comes from trying out many design ideas and rejecting ones that are too difficult while polishing those that make the UI better.

Qualitative usability testing aims to identify issues in an interface, while quantitative usability testing is meant to provide metrics that capture the behavior of your whole user population.

Even people with limited drawing abilities can learn to sketch a wireframe if they learn a few common conventions used to represent various design elements.

Tried and true principles for the past, present, and future of good design

This article explores a few cognitive biases I’ve experienced first-hand as well as strategies for mitigating their influence.