Re: Default Template discussion

On Mon, Jul 23, 2007 at 08:58:19AM +0300, Janne Jalkanen wrote:
>> I have no argument with that. But unless those small groups are
>> very typical of the target audience they will be less likely to
>> find the glitches, that are nonsensical or difficult than would
>> the larger population.
>
> I think that most of the modern usability researchers would disagree with 
> you there and say that even a small group (5-10) is usually enough to iron 
> out the majority of the issues, and that adding more people to the problem 
> will only confuse the issue and not reveal any major new insights.  It's 
> more efficient to iterate rapidly through a small set of people, rework 
> your UI and get it back to a usability test than it is to get a massive 
> amount of people mobilized for high-quality testing.

pareto's rule 80-20. 80 return for 20% effort

>
>> No, not user preferences. My point was that we do have to care
>> about usability, but with a very small sample size of people who
>> are highly technical and already know the product, we're not
>> going to get very valid usability statistics. They'll be better
>> than nothing, but they won't be typical of how normal, lay people
>> will handle the application.
>
> Yes, we are.  Trust me on this - I've been working closely to experts in 
> this area for quite some time.  Especially with lay people.
>
> /Janne
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