@caroline
>
> > It depends on the design.
> > You can have badly done qualitative studies,
> > as well as poorly designed quantitative studies.
>
> True, but it's so much *easier* to mess up on a survey.


Depends on if you create your own questions or use ones that have been
tested before. There is allot of literature on what works. All the
standard surveys
have been tested, some work better than others.

On the other hand interviewing well takes allot of skill, and the correct
methods.

With both methods a bad question, is a bad question. It is very easy to
prime people.  Would you not say it is more difficult to make a mistake with
a pre tested standard survey question, that has been tested many times
before than a novice interviewing somebody?

Margaret Mead (who some consider to be the mother of ethnography) managed to
spend 9 months in Samoa and as the anthropologist Derek Freeman pointed out
got it very wrong.

In regards to asking people, there is the issue that if something is non
verbalised, then verbalising it will change the decision making. (see: Herb
Simon, and more recently Ariely et al)

I am all for interviewing and observations but it is hard. My dad an
Anthropologist, and some of the Anthropologists who I worked with in Africa
where very very good at it, but most people are not.

As I have said before we employ a mix of both qualitative and quantitative
methods in discovering and fixing usability problems—there are inherent
risks to both methods. We also test one against the other.

James
http://blog.feralabs.com

2009/3/12 Todd Zaki Warfel <[email protected]>

> On Mar 12, 2009, at 1:32 PM, Caroline Jarrett wrote:
>
>  True, but it's so much *easier* to mess up on a survey.
>>
>
> So true.
>
>
> Cheers!
>
> Todd Zaki Warfel
> Principal Design Researcher
> Messagefirst | Designing Information. Beautifully.
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