Dave O'Brien

Dave has been researching, designing, and testing user interfaces for 20 years in Toronto, San Diego, and Wellington, most recently with Optimal Experience. He is also the creator of Treejack, Optimal Workshop's tree-testing app, author of an upcoming book on tree testing, and dabbler in Android apps.
THE LATEST

Planning a tree test: Part II

Following from part one of this tree testing series, Dave O'Brien shares tips for planning for problems and figuring out roles amongst your team.

Planning a tree test: Part I

So you're ready to start a tree test. But how do you correctly plan for it? Dave O'Brien shares his tips for planning a tree test in this two-part series.

Why should you run a tree test?

There are many different reasons why you'd run a tree test. Dave O'Brien explains the how and why of tree testing here.

Tree testing in the design process — Part 2: The design phase

After explaining how tree testing fits into the research phase in part one of this series, Dave O'Brien now tells us where it sits within the design phase.

Tree testing in the design process — Part 1: The research phase

Every facet of design — research, information architecture, visual design, content strategy — affects everything else. Read on to find out how.

How to Spot and Destroy Evil Attractors in Your Tree (Part 1)

Dave O'Brien from Optimal Experience talks us through how to identify evil attractors in our tree tests — and how we can fix them.