Who should perform a walkthrough, and when?
There are basically two types of walkthroughs:
- When designing a small piece of the interface on your own
you can do an informal walkthrough in your head.
- For larger parts you should get together with a group of people,
including other designers, and do a complete walkthrough of a complete task.
It is important to do a walkthrough with colleagues at the same
hierarchical level in the organization.
When managers are present a walkthrough becomes a show,
and people feel awkward about giving criticism.
A walkthrough is done as part of the design process,
not of the validation process for a finished prototype.