[Sigia-l] Participants in Iterative Testing Sessions

[Patrick Hunt]

Hello all.

Does anyone have experiences, opinions or resources to share about whether
it is best to conduct iterative tests (iterative in this being from
wireframes to design comps to html prototypes to staging to production,
rather than from wireframes to revised wireframes) with the same or
different users? Aside from the risks associated with availability of
participants across multiple tests and the resulting impact on schedule,
what are the disadvantages of using the same test participants across tests?
What are the advantages? Is there particular value in asking half of the
participants in the first test to return for the second test, while also
introducing new participants in the second test? And so on...

Thanks in advance for your advice. Happy Friday.

pH