Notes

[NOTES SECTION This is where the important information is: for each slide.]

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The "Web Accessibility for Older Users" presentation material is copyright© W3C and licensed under the W3C Document License, with the exception of some of the images. Additionally, you are granted permission to create modifications or derivatives of the material.

All that means that you can copy, change, translate, distribute, and present the "Web Accessibility for Older Users" presentation material as long as you include the reference information below as source material:

Web Accessibility for Older Users, A.M.J. Arch, ed. W3C (MIT, ERCIM, Keio), January 2009. www.w3.org/WAI/WAI-AGE/@@@@

Images

Credits for the images and information, and permission to use any images, are included in the Notes section where the image or data first appears.

Note to presenters:

• Some people may not be able to see the slides, for example, people who are blind or people listening to an audio-only recording of the presentation. Make sure that you say all of the information that is on each slide.
• Speak slowly and clearly - some participants may not be fluent in your spoken language; some may have difficulty with your accent; some may be relying on a sign-language interpreter.

Notes

Today I'll be talking about the WAI-AGE project that is looking at the requirements of older people using the Web.

The presentation will introduce the project, talk about the changing world-wide demographic situation, introduce some of the findings from a literature review, highlight some of the requirements of older users, and talk about the next steps for the project.

Notes

The Web Accessibility Initiative: Ageing Education and Harmonisation (WAI-AGE) project is funded as a European Commission IST Specific Support Action with the goal of increasing accessibility of the Web for the elderly as well as for people with disabilities in European Union Member States.

The project is specifically intended to:

• develop a better understanding of the needs of the ageing population in the context of existing Web accessibility guidelines
• work with the ageing community to obtain more direct contribution into W3C/WAI work
• revise existing educational materials to better reflect the needs of the ageing population, and develop new materials
• pursue standards coordination to promote adoption and implementation of a common set of guidelines

Much more information is avaiable from the Project page at www.w3.org/WAI/WAI-AGE/

Lets first look at the motivations behind this project ... [next slide]

Notes

The United Nations has forecast that "Globally, the number of persons aged 60 years or over is expected nearly to triple, increasing from 673 million in 2005 to 2 billion by 2050" while at the same time, the total population is only forecast to increase by 40%. They also state that "Today, about half of the oldest-old [those over 80 years] live in developing countries but that share is expected to reach 71 per cent in 2050". At the same time, they expect the working-age population to decline by 5%.

Note: The UN defines 'working-age' as 15-59 years

UN References:

http://www.un.org/esa/population/publications/wpp2006/WPP2006_Highlights_rev.pdf

http://www.un.org/esa/population/publications/wpp2006/wpp2006_ageing.pdf

Notes

In the European Union, the EU-27 group of countries are predicted to to have nearly 30% over its population over 64 years by 2050, up from 17% in 2010 to 20% in 2020, 24% in 2030, and 27% in 2040.

Many countries will experience different changes from this - some are forcast to have greater proportions, others lower proprtions of over their populations over 65 years. For example Ireland is forecast to grow from 11% in 2010 to just 24% in 2050, while Italy is forecast to grow from 23% in 2010 to 33% in 2050.

Note to presenters:
Several slides follow with specific country demographic forecasts for you to select from.
You may like to contrast your own country with a low growth and/or a high growth country.

Reference:

http://epp.eurostat.ec.europa.eu/cache/ITY_OFFPUB/KS-SF-08-072/EN/KS-SF-08-072-EN.PDF (PDF)

Definitions:

"EU-27" represents the 27 countries that comprised the EU as at 1 January 2007

Notes

This slide shows the ageing trend in the UK ... the number of people over 50 years will rise from 35% in 2010 to 38% in 2020 and 39% in 2030, while the population over 65 years will rise from 17% in 2010 to 19% in 2020 to 22% in 2030 (and by 2030, the UK is forecast to have 53,000 people over 100 years!)

While the proportion over 50 years is not forecast to grow as rapidly as the proportion over 65 years, it does represent people still in the workforce who may be starting to experience some age-related impairments such as vision and hearing decline (for instance the proportion of people with hearing loss increases sharply at around age 50, and 10% of UK blind and partially sighted people are in the 50-64 age group [76% are over 65 years]).

Note to presenters:
Don't forget to read the numbers out for those who may have low vision

UK Office of National Statistics:

http://www.statistics.gov.uk/statbase/Product.asp?vlnk=8519

http://www.statistics.gov.uk/downloads/theme_population/NPP-2006/wuk065y.xls

Spain is forecast to experience similar ageing patterns to the EU average for the next decade, but will exceed the EU average by the 2050.

[read out the data]]

Source: EUROPE IN FIGURES — Eurostat yearbook 2006-07 (Chapter 1 - Population) PDF

Discuss the numbers and emphasise that in Japan it is currently 1 in 5 over 65; within 30 years it will be 1 in 3
Japan's proportion of people over 65 years is the highest in the world, and the UN forecasts that "population of Japan is projected to remain the oldest in the world with a median age of 55 years in 2050."

At the same time, Japan's total population is expected to decline from around 127m people at present to less than 90m people by 2050.

Source:

Reuters, undated - http://www.reuters.com/news/globalcoverage/agingjapan

Reuters, 17 Sept 2007 - http://www.reuters.com/article/ousiv/idUST2888420070917

UN - http://www.un.org/esa/population/publications/wpp2006/wpp2006.htm

US projects are ... [read out numbers]

The United States is forecast to experience lower ageing patterns compared with the EU. For example, the US is forecast to have 16% of its population over 65 year of age in 2020, while Europe forecasts 21%.

[read out the data]

Source: US Population Projections (released 2008) - see Table 3

Australian projections are ... [read out numbers]

Australia is forecast to experience lower ageing patterns compared with the EU average. For example, Australia is forecast to only have 19% of its population over 65 year of age in 2026, while Europe forecasts 36% in 2025.

Source: ABS Australian Population Projections (2006 TO 2101) - Catalogue # 3222.0
http://www.abs.gov.au/AUSSTATS/abs@.nsf/DetailsPage/3222.02006%20to%202101?OpenDocument

Note to presenters:
Forecasts for all EU countries are available from EUROPE IN FIGURES — Eurostat yearbook 2006-07 (Chapter 1 - Population) PDF
UN forecasts for most regions and countries are available from the UN's Population database
Local projections may be available from the national statistics organisation or Government department in your country

This table highlights the forecast differences across Europe over the next four decades in the old-age dependency ratio.

In 2005, most countries were close to the EU average of 1 person over 65 for every four of working age (1:4).

The EU average in 2010 will be 26%, forecast to rise to 40% in 2030 and 53% in 2050 (i.e. a change from 4 workers for every retiree to 2 workers for every retiree).
Some individual countries within the EU vary considerably from the average [read out the contrasting figures for Netherlands, Austria and Italy]

These forecast changes between 2010, 2030 and 2050 emphasises the need to support older people in the workplace (note that many EU countries are currently raising the retirement age) and in the community - an accessible Web contributes to this.

Note to presenters:
European presenters may like to extract the actual numbers for their own country from EuroStat and contrast with EU average (see also the Eurostat Yearbook [PDF])
This slide presents the data as a table - you may prefer to use the following slide which contains the same data graphed (don't use both).

Definitions:
"old age dependency ratio" is the ratio of the population aged 65 and over as a % of the working-age population
"working-age population" is defined by EuroStat as people between 16 and 64 years of age
"EU-25" represents the 25 countries that comprised the EU as at 1 May 2004

This graph highlights the forecast differences in the old-age dependency ratio across Europe over the next four decades.

In 2005, most countries were close to the EU average of 1 person over 65 for every four of working age (1:4).

The EU average in 2010 will be 26%, forecast to rise to 40% in 2030 and 53% in 2050 (i.e. a change from 4 workers for every retiree to 2 workers for every retiree).
Some individual countries within the EU vary considerably from the average [read out the contrasting figures for Netherlands, Austria and Italy]

These forecast changes between 2010, 2030 and 2050 emphasises the need to support older people in the workplace (note that many EU countries are currently raising the retirement age) and in the community - an accessible Web contributes to this.

Note to presenters:
European presenters may like to extract the actual numbers for their own country from EuroStat and contrast with EU average (see also the Eurostat Yearbook [PDF])
This slide presents the data as a graph - you may prefer to use the previous slide which presents contains the data as a table (don't use both).

Definitions:
"old age dependency ratio" is the ratio of the population aged 65 and over as a % of the working-age population
"working-age population" is defined by EuroStat as people between 16 and 64 years of age
"EU-25" represents the 25 countries that comprised the EU as at 1 May 2004

Notes

These previous statistics are leading in working ages being extended, and with that goes lifelong learning.

Furthermore, all forms of community participation are going online, and participation is expected and being encouraged ... [read list]

Older people are expected and wanting to participate, and are being encouraged and supported to do so if they aren't online already.

Impairment often accompanies the ageing process - vision loss, hearing loss, motor skill diminishment, cognitive decline.

Vision decline often starts in a person's mid-40s. It affects 16% of people 65 to 74 years, but 46% of those over 85 years. In older people vision decline includes:

• Decreasing ability to focus on near tasks, including a computer screen
• Changing colour perception and sensitivity - less violet light is registered, making it easier to see red and yellows than blues and greens and often making darker blues and black indistinguishable
• Pupil shrinkage - resulting in the need for more light
• Decreasing contrast sensitivity - an 80 year old typically has 80% less contrast sensitivity than a 20 year old

Hearing starts to decline at around 50 years, affecting 19% of people 61 to 80 years but 75% of people over 81 years.

Motor skill diminishment includes arthritis, with joint stiffening, and Parkinson's Disease, with associated hand trembling, making mouse use difficult or impossible for some. Arthritis is estimated to affect at least 50% of people over 65.

Cognitive impairment is also common. While Dementia affects part of the older population (1.4% of people 65-69 years increasing to 24% of people over 85 years), forms of mild cognitive impairment (or MCI) are much more common. MCI can result in:

• problems with short term memory (which may result in a person forgetting the purpose of a web site visit if they get "lost" on the site)
• concentration and distraction issues also common (consider the multiple animated advertisements that appear on some pages)

Note to presenters:
For a short presentation, remove the bulleted lists and speak very briefly to the main areas of vision, hearing, motor skills, and cognition.
More detailed data is available from Web Accessibility for Older Users: A Literature Review

Notes

To better understand the needs of the ageing population, the WAI-AGE Project undertook an extensive Literature Review. This review included a broad range of literature including scientific papers and popular articles. The range of literature reviewed included those that ... [read out the bulleted list]

Notes

In reviewing the literature, the Project found that:

• disability and impairment issues relating to older users were not well understood by industry or by users themselves
• there was a strong tendency in much of the literature to 'reinvent the wheel' and not build on previous work
• some recommendations reflected a lack of technical knowledge, e.g.
  • some recommendations suggested that it was not good to have users double-click (something that is unnecessary on the Web)
  • most of the literature ignored the possibility of browser adaptation or the use of assistive technology
• there was a very apparent lack of mention of the work of W3C and the Web Accessibility Initiative and to not draw on the experience from previous work relating to people with disabilities using the Web
• very few articles considered the use of adaptive strategies (such as changing browser colour and text size) or assistive technologies by older users

Many of the requirements for making websites accessible to people with disabilities match the requirements of older users:

• text size - an ability to increase it from the designers setting
• contrast - having a suitably high contrast for text (and other important information)
• links - clearly identified from the regular text and clearly identifying the link destination
• headings - clearly standing out from the text, and clearly identifying the sections to follow
• navigation - to ensure users know where they are going

WCAG 2.0 addresses these requirements

Usability features also overlap with the requirements of people with disabilities

• fonts - sans-serif seems preferred with left justification (for left to right texts) and avoiding italics, underlining, etc
• layout - consistent layout across the site (and consistent with other sites) to aid recognition and familiarity
• forms - grouping like questions; making compulsory fields very obvious; giving examples; providing clear error messages and help
• Predictability, consistency and tolerance - meeting users expectations as to how a web site is presented and behaves, consistency in the menus and links, downloading links clearly identified. Furthermore, fly-out and pull-down menus can be difficulty for older people, especially with fine motor control difficulties, to utilise.

WCAG 2.0 covers more usability requirements than previously - this will assist older people and people with disabilities

Some other observations were made from the literature:

• many older people are still new to the Web, especially among the older old, and have not had the opportunity to become familiar with computers and the Web. This inexperience is currently an influencing factor in many of the studies discussed in the Literature Review
• with declining memory and concentration common among older people, information overload was a problem that many observers reported, with many pages containing more information than some people could assimilate
• most of the articles considered the experiential usability factors of a website; very few considered the technical, or coding, aspects that may also assist
• online forms were criticised heavily by some, with suggestions made for improvements such as grouping of material, and error reporting
• although hearing decline is common among older people, very few studies looked at the implications of this impairment

 

Notes

The project has been interacting with WAI Working groups and providing some ideas for consideration in forthcoming guidelines or as techniques for existing guidelines.

One of the identified issues has been the duplication of work in this area and the potential for divergence. The propjet has found that older people and people with disabilities have a lot of requirements in common and we need to encourage the researchers, developers and community to work more closely together for an accessible web.

Much of the remainder of the project will concentrate on incorporating the requirements of older people into existing WAI documents and developing new documents to help promote the need for including older people as well as people with disabilities during he development of websites and web applications.

Notes

WAI has Working Groups developing accessibility guidelines and related work, and Interest Groups providing a forum for discussing Web accessibility issues.

The Authoring tools working group develops guidelines, techniques, and supporting resources for Web "authoring tools" (the software that creates Web sites, including the contentmanagement systems, blogs, and social networking websites)

The User Agent working group develops guidelines, techniques, and supporting resources for Web "user agents" (including Web browsers and media players)

The Web Content (WCAG) working group develops guidelines, techniques, and supporting resources for Web "content" (the information in a Web site, including text, images, forms, sounds, and such, as well as the interactivity) and released WCAG 2.0 at the end of 2008.

These three sets of guidelines are crucial for the future of an accessible Web. Obviously the content is important, but that content has to be created appropriately, and anyone should be able to do this. And, the content has to be accessed, and the browser needs to be accessible and usable by all.

Other groups are involved in Evaluation Tools, Education and Outreach, and Research and Development - see the working groups website for details.

Notes

Many existing WAI documents will benefit from having the needs of older users more explicitly considered:

• the Web Accessibility Business Case is being expanded to incorporate more benefits related to the ageing population
• the Before and After Demonstration pages are being updated to incorporate more requirements of older users
• Involving Users is being expanded to incorporate older users, and to consider the complete development process
• How People with Disabilities Use the Web will be expanded to better describe situations involving older people
• The Training Resource will be updated to include WCAG 2.0 and the requirements of older users

Notes

New resources are planned to build on the Project's findings and the benefits of WCAG 2.0:

• Overlapping Relationship Between Web Accessibility and Usability - will explore the overlap within the context of the needs older users
• Developing Accessible Web Sites for Older Users - will describe how to use existing Web accessibility guidelines to create websites for older users
• Improving your Web Experience by Using Adaptive Strategies - provides a general introduction to the use of adaptive strategies and assistive technologies with an emphasis on the needs of older users
• Responding to Organisations with Inaccessible Web Sites - will suggest different options for contacting organisations which have inaccessible Web sites
• Sample Articles - will be reusable material as a resource for people writing about older Web users

Anyone interested in this topic is invited to:

• monitor the Project (new outputs will be announced on the Project page - www.w3.org/WAI/WAI-AGE)
• comment on the documents while they are being developed
• participate in the Project task force or one of the WAI working groups
• undertake some research to fill in some gaps in our understanding (see next slide)

Note to presenters:
Depending on your audience, you may not want to show the following 'research' slide, so just mention a couple of areas

Some of the gaps in our understanding of the requirements of older people using the Web relate to:

• Hearing loss and multimedia - benefits of captions and/or transcripts
• Cognitive decline - impact of Mild Cognitive Impairment, including short-term memory loss and distractibility, on website site use
• Text decoration and fonts - what font weight is preferable?
• Navigation and menu preference - deep versus shallow navigation for ease of comprehension
• Small page changes - are AJAX-driven small page updates noticed? How can they be made more obvious?
• Social networking - what improvements to these sites might be required to better accommodate older users?

 

Note to presenters:
Before asking for questions, please mention that the WAI-AGE Project is a European Commission IST Specific Support Action funded by Sixth Framework Programme.