[IxDA Discuss] Most usable doesn't always mean best solution

[Rob Tannen]

Todd - Depending on the specifics of the question choices, it's not
clear whether more questions is not in fact more efficient.  One of
the issues with "challenge questions" is that users may not have
appropriate or memorable choices to select from.   For example, your
high school didn't have a mascot or your dad doesn't have a middle
name.  

This is especially noticeable with an international user base who
have less in common culturally to draw from.  Therefore, more
question choices increases the likelihood that there there are
questions which users can readily come up with an answer for, rather
than a limited choice where users struggle to find appropriate
questions.  In other words, more questions is more efficient from a
mental task completion view, versus a speed of reading perspective.


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Posted from the new ixda.org
http://www.ixda.org/discuss?post=26755