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From: Alan Chuter <achuter@technosite.es>
Date: Wed, 24 Oct 2007 14:24:53 +0200
To: "Mobile Web Accessibility Task Force" <public-bpwg-access@w3.org>
Message-ID: <op.t0pbfrnazqgw0t@0104xpd.e-fti.com>

On Wed, 17 Oct 2007, Charles McCathieNevile wrote:
> CMN: This also addresses a problem 13.6 was designed to solve of  
> requiring blind users to wade through a large number of links in order  
> to find the one they want. Given that people's mental models generally  
> only hold 7±2 distinct objects [Magic number paper] then having to  
> recall more than that many links to choose the right one leads to  
> serious inefficiency for blind users.

I haven't included the reference to checkpoint 13.6 as it isn't directly  
related to this BP, although I realise what you mean. I've added a  
comparison with all users at the beginning and incorporated your idea into  
the text like this:

How does it help especially users with disabilities?: Like all users of  
the small keypads found on mobile devices, users with motor disability may  
experience special difficulty in using the keyboard or other device to  
navigate between links. Users with cognitive disability may have  
difficulty concentrating on large numbers of links. Screen reader users  
may also have difficulty reading through and remembering a large number of  
links in order to decide which one they want. Given that human memory can  
only hold a limited number of items then having to recall more than that  
many links to choose the right one leads to serious difficulty for blind  
users. Reducing the number of links helps avoid these difficulties.


Alan Chuter
Accessibility Consultant
Technosite (Fundación ONCE)
Tel. +34 91 121 03 35
Skype: achuter1

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Received on Wednesday, 24 October 2007 12:26:05 UTC

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