Well we undertook a study of validity and reliability of WCAG 2.0 and found that an 80% target for agreement is not attainable, when audits are conducted without communication between evaluators. Even with experienced evaluators the error rate is relatively high; and further, untrained accessibility auditors -be they developers or quality testers from other domains- do much worse than this. Read the full published text via ACM Author-izer Open Access on the publications page.
For the last two / three years I’ve been increasingly vocal – and annoyed – at the lack of human factors and user interface work at WWW. I’m glad to say that in 2012 things seem to have changed – lets hope for continued change into 2013 and beyond.
The Star system (circa 1980, and as described in Byte) gave rise to five principles, which in my opinion, are so important and timeless that their formulation and practical application as part of the Xerox Star user interface was without doubt revolutionary.
It is my opinion that these five principles are so important and timeless that their formulation and practical application as part of the Xerox Star user interface was without doubt revolutionary.