RE: testing with a "High degree of confidence"

David,

 

I remember these discussions back when - I recall Gregg providing the 8 out
of 10  - and - I brought his up for WCAG Evaluation Methodology working
group - for their puposes they wanted an algorithmic reference - not human
judgment.   Am not sure they found one.

 

Katie

 

From: David MacDonald [mailto:david100@sympatico.ca] 
Sent: Monday, April 01, 2013 3:50 PM
To: Loretta Guarino Reid; Michael Cooper; Gregg Vanderheiden
Cc: WCAG WG; Eval TF
Subject: testing with a "High degree of confidence"

 

I remember early drafts of WCAG, when discussing human testing we said it
was dependable human testing if "8 of 10 testers would come to the same
conclusions... " or something like that...we later changed it to something
like "most testers would come to the same conclusions" because we thought
the 8 out of 10 rule was a bit prescriptive.

 

I've been looking for that in the WCAG 2, or the Understanding conformance,
Understanding WCAG etc... and didn't find it.

 

The closest I could find was this, but it seems to be more related to
automatic testing...

Does anyone remember the history of that line about "most experts woukd
agree..." and where it is now?

 

"The Success Criteria can be tested by a combination of machine and human
evaluation as long as it is possible to determine whether a Success
Criterion has been satisfied with a high level of confidence."

 

http://www.w3.org/TR/UNDERSTANDING-WCAG20/conformance.html#uc-accessibility-
support-head

 

Cheers

David MacDonald

 

CanAdapt Solutions Inc.

  Adapting the web to all users

            Including those with disabilities

www.Can-Adapt.com <http://www.can-adapt.com/> 

 

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