Do I need UX testing? Yes, More than what you think.
When should I get UX testing started? Much before you think you do.
How should I test UX? First research enough to ensure you understand your context – your target user, purpose of the software, the business in which your organization is, how different are the competing products……many many approaches and methods of UI/UX testing that can be applied at different stages of product development.
Check these out:
Workshop: Why You Need to Build UI/UX Testing Into Your Test Planning Immediately!
Workshop: Living In A Context Driven World
Session: Maximizing Success with Data Testing
Don’t miss Smita on the keynote stage during the Keynote Panel: Test (R)evolution: An Expert Panel on Software Testing