Informed consent theory in information technology

AUTHOR
Flick Catherine

ABSTRACT

Informed consent, despite being a relatively new concept, is a well-established requirement in areas such as medical research and clinical practice whereby practitioners are required to fulfill certain requirements of disclosure, achieve understanding, judge competence, and ensure voluntariness before obtaining assent from a subject or patient (Faden and Beauchamp, 1986).
Situations similar to that in medical research and clinical practice exist in an information technology setting, whereby computer users are asked to make autonomous decisions that can affect important aspects of their lives, such as their personal privacy, security, and autonomy.

This paper aims to explore the nature of informed consent and its applicability to information technology situations by studying the traditional theory behind the concept, the history and use of it in clinical medical practice and medical research settings, and the attempts at establishing informed consent mechanisms in information technology. It lastly explores a theory of informed consent based on these ideas that is specifically aimed at information technology situations.

The seminal literature for theory of informed consent is Faden and Beauchamp’s 1986 “A History and Theory of Informed Consent”. Although it concentrates primarily on the medical and legal fields, the concepts it introduces can be applied to situations in information technology, and have been in some specific situations, such as for online interactions (Friedman et. al. 2000,Friedman et. al. 2002). In this paper I argue that the principles of informed consent, as established in medical research and clinical practice, can be more generally described and applied in information technology to offline as well as online computing interactions between a variety of different stakeholders, and not just the generic at-home end-user/non-specific “practitioner” stakeholder relationship as explored by Friedman.

The establishment of informed consent in the medical field is fairly recent, and is rooted in reactions to human rights disasters such as World War II and the Tuskegee syphilis trials. Information technology is yet to have such a crisis, and the establishment of general best practice guidelines may prevent any disasters stemming from similar consent issues. This is especially important considering the increasing ubiquity of computing and the lack of an industry regulatory body, although, ideally, a regulatory body would be best able to impose such guidelines. As it is, informed consent is dealt with on an ad-hoc basis, with potentially serious implications should something go dramatically wrong. All too often the practitioners of the field (for example, companies providing software, hardware, or support) rely on external standards for informed consent guidelines from other fields (such as from the medical or legal fields), and the governing powers of these for guidance, which is essentially the bare minimum required for legal liability, and often not particularly suited for situations that may occur in information technology. This approach, however, ignores the real need for specification within the industry for interactions between stakeholders that places the users of systems as the primary concern, and not purely focusing on legal liability.

I would lastly like to discuss a theory of informed consent for information technology that builds on the history of medical informed consent and the concepts established by Faden and Beauchamp, exploring

  • the autonomy of computer users and other stakeholders in a variety of relationships,
  • disclosure of information across varied platforms and situations,
  • the concept of competence, especially when taking into account the ability for information technology to provide a significant level of anonymisation,
  • mechanisms of testing for understanding given the aforementioned anonymisation and potential range of levels of competence,
  • ways of achieving a computer user’s autonomous decision free of coercion given the competitive markets and “free-for-all” industry.

Investigating the issues at stake here will provide the groundwork for further research aimed at establishing sets of guidelines and best practice documents that will be able to effectively address informed consent issues within the information technology industry.

REFERENCES

Faden, R, and Beauchamp, T. A History and Theory of Informed Consent. Oxford University Press, New York NY, 1986.

Friedman, B., Felten, E., and Howe, D. C. Informed Consent in the Mozilla Browser: Implementing Value-Sensitive Design.

Proceedings of the 35th Hawaii International Conference on System Sciences, 2002.

Friedman, B., Felten, E., and Millett, L. I. Informed Consent Online: A Conceptual Model and Design Principles. UW-CSE Technical

Report Number 2000- 12-2, 2000.

Metaphysical Foundations for Information Ethics

AUTHOR
Terrell Ward Bynum

ABSTRACT

In the current “Age of Information”, the field of Information Ethics is becoming vital to the preservation and advancement of human values, the understanding of human relationships and communities, the ethical development and control of new technologies, and the fostering of respect and cooperation among many diverse cultures and societies across the globe. The time is right, therefore, for rapid development and advancement in Information Ethics – a broad new field of research about ethical issues arising from the creation, transmission, storage and processing of information. Subfields of Information ethics include vital areas like Computer Ethics, Internet Ethics, Agent Ethics, Journalism Ethics, Library Ethics, the Ethics of Genetic Engineering, the Ethics of Nanotechnology, and others.

An important prerequisite for the advancement of Information Ethics is the provision of a philosophical/metaphysical foundation. Happily, major steps in the development of such a foundation were taken decades ago by Norbert Wiener in his books Cybernetics (1948), The Human Use of Human Beings (1950, 1954) and God and Golem, Inc. (1964). In addition, beginning in the late 1990s, Luciano Floridi (with some of his colleagues at Oxford University) initiated a rigorous and ambitious program to advance the field of Information Ethics. The present paper briefly explores (1) Wiener’s metaphysical foundation for Information Ethics, (2) some contemporary developments in astrophysics which reinforce Wiener’s achievements, and (3) an alternative metaphysical foundation offered by Floridi and his Information Ethics Research Group at Oxford University.

Wiener’s metaphysics assumed that information is physical – subject to the laws of nature and measurable by science. The sort of information Wiener had in mind is sometimes called ‘Shannon information’ – named for Claude Shannon, who had been a student and colleague of Wiener’s at MIT. Shannon information is carried in telephone wires, TV cables and radio signals. It is the kind of information that digital computers process and DNA encodes within the cells of all biological organisms. Wiener believed that such information, even though it is physical, is neither matter nor energy. Thus, while discussing thinking as information processing in the brain, he wrote that the brain

does not secrete thought “as the liver does bile”, as the earlier materialists claimed, nor does it put it out in the form of energy, as the muscle puts out its activity. Information is information, not matter or energy. No materialism which does not admit this can survive at the present day. (Wiener 1948)

According to Wiener’s metaphysics, matter-energy and Shannon information are different physical phenomena, but neither can exist without the other. So-called ‘physical objects’ – including living organisms – are actually persistent patterns of information in an ever-changing ‘flow’ or ‘flux’ of matter-energy. Every physical process is a mixing and mingling of matter-energy with Shannon information – a creative ‘coming-to-be’ and a destructive ‘fading away’ – as old patterns of matter-energy and information fade and new ones emerge.

Another aspect of Wiener’s metaphysics is his account of human nature and personal identity. Human beings are, according to Wiener, patterns of information persisting through changes in matter-energy. In spite of continuous exchanges of matter-energy in a person’s body, the complex organization or form of the person – the pattern of Shannon information encoded within– is maintained to preserve life, functionality and personal identity. As Wiener poetically said,

We are but whirlpools in a river of ever-flowing water. We are not stuff that abides, but patterns that perpetuate themselves. . . . The individuality of the body is that of a flame…of a form rather than of a bit of substance. (Wiener 1954)

To use today’s language, humans are ‘information objects’ whose personal identity is tied to information processing and persisting patterns of information, rather than specific bits of matter.

Support from today’s physics – Wiener’s metaphysics anticipated recent developments in physics: According to the so-called ‘theory of everything’, which has emerged from physics during the past two decades, the universe is fundamentally informational. Every so-called ‘object’ or physical entity is, in reality, a persisting pattern of Shannon information. This account of the nature of the universe originated with Princeton physicist John Wheeler (1990), and it has been refined and supported by many scientific experiments during the past decade.

In recent years, an alternative metaphysical foundation for Information Ethics has emerged from the work of Luciano Floridi and his Information Ethics Research Group at Oxford. They have developed an approach to ethics that places at the center of ethics, not the actions, values, and characters of human agents, but instead the evil (harm, dissolution, destruction) suffered by the recipients of action. By interpreting every existing entity in the universe as an ‘informational object’, Floridi and his colleagues are able to shift the ethical perspective from an ‘agent-based’ (and human-based) theory to a ‘patient-based’, non-anthropocentric theory.

With this approach, every existing entity – humans, other animals, plants, even non-living artifacts, electronic objects in cyberspace, pieces of intellectual property – can be interpreted as potential agents that act upon (physically affect) other entities, as well as potential patients that are acted upon by other entities.

Unlike Wiener’s metaphysical foundation for Information Ethics, which is based upon Shannon-information and the laws of physics, Floridi’s Information Ethics presupposes a Spinozian metaphysics:

[Information Ethics] suggests that there is something even more elemental than life, namely being – that is, the existence and flourishing of all entities and their global environment – and something more fundamental than suffering, namely entropy. . . . [Information Ethics] holds that being/information has an intrinsic worthiness. It substantiates this position by recognizing that any informational entity has a Spinozian right to persist in its own status, and a Constructionist right to flourish, i.e., to improve and enrich its existence and essence. (Floridi 2006, p. 11)

Electronic democracy and informed consent

AUTHOR
Mike Bowern

ABSTRACT

The vast majority of contemporary liberal democratic states are representative democracies, meaning citizens choose people from the citizen body to represent them in a parliament. Candidates present their own, or their party’s, statement of policies and promises for what they would do if they were elected to govern the nation. Citizens consider these policies, and other information provided during the election campaign, and cast their votes for the candidate(s) of their choice. The party that has the most number of elected candidates forms a government.

The government claims that, by being elected, it has a mandate from the people to implement these policies and promises, and to enact the necessary laws. It assumes that it has the consent of citizens to do these things.

Some commentators have cast doubt on this assumption. “Voters rarely endorse the winning party’s manifesto because they don’t read it” Mclean (1989). Uhr (2005) considers the current situation is more one of assent – a nod of approval – than informed consent. Arblaster (2002) suggests “silence means consent”, hence tacit or implied consent.

An important point to consider in the matter of consent concerns events and issues which arise during the term of the parliament, which were unknown during the election. In these cases there could be occasions when the notion of implied consent was abused by the government.

In this paper the term “informed consent” is used to imply that there is a process of providing information to citizens before and during an election, to help them decide which candidate or party should receive their consent to govern.

It also applies to information being available to inform citizens of issues which arise during the life of the parliament. In this instance, some thought needs be given to the types of decisions that require consent, since this would not be required for every decision. The types of decisions which should have informed consent could be those where politicians are granted a conscience vote (as in Australia), on abortion reform or voluntary euthanasia for example; or on issues which have major impact on the majority of citizens, such as going to war.

A general principle is that citizens have the right to know about matters that concern them, and information on these matters should be freely available. The information to be provided will be different during an election from that required for specific matters during the term of the parliament.

Information during an election could cover such things as the parties’ manifestos, criticisms and commentaries on these manifestos, and profiles of candidates. The types of information required to cover matters arising during the life of the parliament would depend on the particular issue, but it could follow the model of the deliberative poll. In a deliberative poll the participants are provided with the arguments for both sides of the question, the levels of detail depending on the nature of the problem.

In our modern societies there would be no problem in providing enough information to citizens. This is not difficult to do with the traditional electronic and print media; and the use of information and communications technology (ICT), especially the internet and web sites, would provide other important means to deliver information. This would be one aspect of electronic democracy.

Whatever delivery method is used, the main problem would be the provision of complete, unbiased and relevant information. For example, public information currently provided by a government for community education is a good thing, but this must be distinguished from public opinion-forming material, which is more in the way of government propaganda, provided at taxpayers expense.

There will be some citizens who will wish to delve deeper into a particular issue, and investigate other government documents. Governments’ Freedom of Information (FoI) initiatives have a valuable role here, although the terms of exclusion of some documents may be rather detrimental to the spirit of FoI. Access to FoI services on-line would be another component of electronic democracy.

The parliamentary election process enables citizens to give their consent to the government. However, providing citizens with a means to exercise their power by giving consent for a particular course of action during the parliamentary term does raise some problems. Should the democratic system have some additional voting mechanism for citizens to express, or withhold, their consent on a particular matter. Perhaps an electronic voting system could provide this mechanism.

To require this consent to be provided on a regular basis is like conducting frequent referenda, and there are very few democracies which use referenda to this extent. Alternatively, the greater use of opinion polls to gain this consent could be considered, but there could always be the question as to whether the poll sample was big enough to be considered democratic, and such polls could always be open to challenge, eg. on the grounds that the people responding to the polls were not sufficiently informed of the issues. However, this type of challenge to opinion polls could lead to a greater use of deliberative polls. A more informed citizenry and the use of deliberative polling could be part of a bigger picture of participatory democracy.

The solutions to these problems will be related to the particular culture of the society in question. Each society has evolved its democratic processes over many years, and continues to do so. Future versions of democracy are likely to include solutions to this problem of providing citizens with greater power through informed consent. These solutions will probably include a version of electronic democracy.

REFERENCES

Arblaster, A, 2002, Democracy, Third Edition, Open University Press, Buckingham, UK.

McLean, I, 1989, Democracy and new technology, Blackwell Polity Press,
Cambridge, UK.

Uhr, J, 2005, Terms of Trust: Arguments over ethics in Australian Government, UNSW Press, Sydney.

Technological Transcendence: Why It’s Okay that the Future Doesn’t Need Us

AUTHOR
Thomas Blake

ABSTRACT

Enhancing oneself through the use of cybernetic technology is becoming a real possibility for humankind. Through advancements in cybernetics, one can potentially transform oneself into a different sort of being. But what are the ethical implications of such a transformation? If ethics is based on one’s nature, will post-human “cyborgs” operate under a different standard of ethics? Can one rationally choose to become a different sort of being? In this paper, I briefly examine the issue of whether post-human ethics is indeed possible, and also whether a human can rationally choose to become a cyborg.

I will begin by discussing the meaning of the word “cyborg”, which can be defined in many ways. The word is short for “cybernetic organism”, meaning a combination of information technology and living matter. In popular culture and science fiction, this can mean any living being that has been integrated with any sort of technology; for example, a computer containing microorganisms, a child with immunizations, or a man wearing glasses would count as a cyborg in this very broad sense. But, of course, “information technology” usually refers to computing devices, so these examples are not really cyborgs in the usual sense. In this essay, I will simply specify that a cyborg is a human who has undergone the physical addition of mechanical parts – whether computing parts or not – such that they are integrated with the human’s biological body. Thus, a human who has been augmented with computer technology is a cyborg in my sense, and so is a human with prosthetic limbs which he or she can control directly.

At first glance, it seems that the addition of mechanical parts to the human body will not result in a being with a different nature. For example, if I have my leg amputated and I wear a prosthetic leg, I doubt that anyone would consider me to be inhuman. I believe that this would still be true if I were to attach a prosthetic leg that I can control as if it were my original leg. When we see a cyborg in science fiction, however, with all robotic limbs and laser eyes, there seems to be something unnatural and even menacing about it. In fact, it seems better to call such a thing “it” rather than “him” or “her”. It seems important, therefore, to examine the extent or nature of the change that transforms a human into a cyborg in the ethically relevant sense.

The potential for a change in human nature is important to ethics, because ethics is relative to human nature. Aristotle, amongst others, has argued that ethics is intimately related to human nature, and this connection is apparent in almost any ethical theory. Both Kantians and Utilitarians, for instance, would generally agree that the way a human should act is not the same as the way a dog or an insect or a chair should “act” (or even whether it makes sense to say that such beings should act, ethically speaking, in any way at all). Thus, for any ethical theory, we must ask whether the way a human should act is the same as the way a cyborg should act. Since what one should do is relative to human nature, it seems that a change in one’s nature could necessitate a change in one’s ethics.

Of course, how one might transition from one sort of ethics to another is not obvious. In “Transcending Humanity”, Martha Nussbaum claims that a human cannot possibly choose to become nonhuman. Something that is not a human might not have the virtues of a human, and thus a new life as a different sort of thing cannot fit into the context of my life as a human. Suppose that I am a human who is courageous, loyal and physically powerful, and that for a cyborg these traits are not virtues. Can I then, as a human, choose to become such a thing? Would the prospect of living such a life have any meaning for me while I am still a human? What Nussbaum suggests is that if transcending humanity would cause one’s nature to change, then one would have no context within which to choose such a life.

So what reason could we possibly have to become “more than” human? In the article “Playing God: Technological Hubris in Literature and Philosophy”, Richard Volkman shows that we humans have an imperative to transcend our limits. He demonstrates that it is in our nature to try to become greater than we are, even to the extent of becoming godlike. This shows that we can have a reason, consistent with our nature, to become something other than human. He also shows that technology is the means by which we become greater than we are. This suggests that the use of cybernetic technology for transcendence of humanity is not just a possibility, but an inevitability.

It follows that ethics based upon human nature must be open to reasons for becoming something that is nonhuman. If becoming cyborgs is an inevitable part of our future, which will come about through human choices, then it is absurd to think that ethics will not apply to such choices. Even if the transition from human to cyborg is not inevitable, it seems to be a natural part of the human condition to desire such a transformation.

REFERENCES

Nussbaum, Martha. “Transcending Humanity”. In her book Love’s Knowledge: Essays on Philosophy and Literature. Oxford University Press, 1990.

Volkman, Richard. “Playing God: Technological Hubris in Literature and Philosophy”. Proceedings of ETHICOMP2001, Gdansk, Poland.

A short history of ETHICOMPs

AUTHOR
Angel Luis Garcia Alvarez, Porfirio Barroso Asenjo, Rishwina Dookhony

ABSTRACT

ETHICOMP (Ethics and Computer) has become a reality nowadays. The registered trademark belonging to the Centre for Computing and Social Responsibility (CCSR) at the Leicester University (United Kingdom) has gradually reached maturity and, after eight editions, has reached a recognised position among the most important congresses in the world about Computer Ethics. This evolution had not gone unnoticed and, eleven years after holding the first edition in Leicester in 1995, we thought it was necessary to make a content analysis and a comparative analysis about the development of the congress during its first decade of existence, both of which had not been possible until today. In this paper we will get some ideas and we’ll arrive to some conclusions on the historical evolution and features of ETHICOMP.

The first purpose or goal of this research that we present in this paper is to observe how ETHICOMP has grown and developed throughout the first eight editions and which guidelines it has followed. Our work consists not only of an analysis of one congress but a general perspective of all the congresses up to the present time. Due to the importance and response that ETHICOMP has amongst scholars of Computer Ethics, the analysis of ETHICOMP will eventually become an analysis of the predominant trends in Computer Ethics among the most prestigious authors, professors, and researchers of Computer Ethics all over the world.

To carry out the mentioned analysis of ETHICOMP, the most obvious and logic way was to approach the congresses through the previous articles and papers presented to ETHICOMP itself. Thus, the title of this abstract “A short history of ETHICOMPs”, is due to the analysis of all conferences published in the Book of Proceedings, more than 800 documents have been studied in multiple ways in order to finally arrive to this work that enlightens past, present, and future trends of ETHICOMP.

After we achieved the first step of our research of getting all the Book of Proceedings of all the conferences held by ETHICOMP, we continued to the most arduous work of our research: reading, comprehension, and categorisation of all the presented articles, and so on. The next step was to develop a process with which to classify criteria at the moment of categorising the distinct papers to place them in similar levels. We created a classification of the articles according to its topics or themes presented in the lectures of the Book of Proceedings so we could discover the ETHICOMP trends, and in addition at the same time, to know whom the scholars of Computer Ethics were that presented the articles in the conferences. Once we classified the paper, we paid attention to other aspects of the articles such as who the authors were, the year of presentation of the papers, or their possible relationship in the historical context.

Once completed the classification of the topics, it was time to collect and present the results in a paper in which we carried out an analysis in two stages. First, we studied each ETHICOMP yearly conference individually in order to find out the trends that dominated each one of them, the most frequent themes or topics, their relationship between the general title requested by ETHICOMP, which varies every eighteen months when every conference is held, and the presented papers by the scholars in Computer Ethics. Once analysed individually, each of the articles of all of the eight editions of the ETHICOMP conferences, we achieved a global analysis, observing the total number of articles presented with the goal of reaching some general conclusions of the evolution and trends of these first ten years of ETHICOMP. To arrive to these conclusions we analysed these five factors:

  1. Evolution of the most repeated or more frequent themes presented in ETHICOMP
  2. The proposed ETHICOMP theme and its corresponding presented papers
  3. The number of articles presented in each ETHICOMP
  4. The total number of papers presented in each of the forty ETHICOMP categories studied
  5. Features and profiles of the authors who presented papers in EHICOMP

Once this double analysis was completed, we arrived at some results and conclusion that we will present briefly in advance. First, we found three stages of different hegemony in ETHICOMP. The first stage, from 1995 to 1999, is under the domain of the “Necessity of the existence of some ethical aspects and deontological guidelines.” The second stage is marked by the “Academic preparation and continued education.” And a third stage started in 2002 and continues to the present time, dominated by the “Development, promotion, and access to Computer Science.” We have also seen articles sent to ETHICOMP unrelated to the proposed theme or topic for each ETHICOMP conference but, on the contrary, they corresponded to the broad proposition of the year-and-a-half conference more than the requested theme or topic by ETHICOMP. The number of presented papers of each edition of ETHICOMP is marked, in this first stage from 1995 to 1999, by an increased number of papers each year and culminated when ETHICOMP stabilises around 130 papers. We have seen that the most important topics regarding the total number of proposed papers corresponded with the three themes that have appeared along the eight ETHICOMPs. The first topic was “Development, promotion, and access to Computer Science” with a percentage of 11.56% of the total number of papers. The second was “Academic preparation and continued education” with 9.11%. And the third topic was “Necessity of the existence of some ethical aspects and deontological guidelines” with a percentage of 8.99%. Finally, we have also observed and analysed the profiles of the authors who have attended all the previously held conferences, resulting in only 2 authors, and those who have presented the highest number of papers in all eight ETHICOMPs.

A series of results and conclusions which point to a single direction: to analyse the evolution followed by ETHICOMP in its first eight editions, always correlated with the historical and social context in which it has developed, and, along with it, the entire field of Computer Ethics, which is so accurately represented by such prestigious congress.

Challenges to improve access to information society: from usability to e-quality

AUTHOR
Teresa Torres-CoronasLeonor Gonzalez, Mar SoutoMario Arias-Oliva

ABSTRACT
Individuals and organizations have enhanced the use of Internet and web information services during the last decades. Web pages are increasing exponentially every day (Gullison et al, 1999). Internet is used by 70% of its user as an information source (Korman, 1998). But according to the research conducted by the “Environmental Systems Research Institute” (2005), only 40% of the users searching for information can find it. To improve access to information will be a key stone in a further development of the Information Society.

There are more important problems than searching the right information when accessing to web information services. Many web pages are not accessible or easy to use for any user. Most of web information services have been developed by computer science specialist, graphical design specialist, without taking into consideration quality or communication experts’ criteria (Murray and Costanzo, 1999).

According to Ivory and Heast (2002) most of web sites are not usable, and this problem will increase in the future.

As the World Wide Web Consortium points out, individuals that have no access to the right technology cannot access to information services. For instance, a web page that required broadband access will not be accessible for a 28.000 kb per second connection modem; or a computer that has not installed a very last version of browser software will not let access to certain information services (W3C, 2005). If organizations wish to ensure access to their web information services, web pages must be designed taking into consideration the specific user situation, including special requirements for handicap people. In US, 54 millions of persons can be considered handicappers (Jackson-Sanbon et al, 2002); and in the UK 11 million persons have legal consideration of handicap according to the “Labour Force Survey” (Grewal et al, 2002). Are web sites ready to be browse by people with disabilities such us blind, deaf, color-blind, or any other disabilities?.

Only developing accessible web sites for people with disabilities we will improve really access to the Information Society. There are rules to fulfil and to guaranty that web site can be accessible for everybody. The most well known is the AAA standard developed by the World Wide Web Consortium, the WAI – Web Accessibility Iniciative, WCAG – Web Content Accessibility Guidelines. Designing accessible web sites for everybody (including people with disabilities) must be an ethical imperative to guaranty access to the Information Society. Regulatory frameworks are including these aspects in order to avoid any kind of discrimination in the Information Society. For instance, in the United States the Section 508 Amendments make mandatory for all government webs to make their pages accessible for people with disabilities, and regarding the American with Disabilities Act we find a trend to apply the no discrimination principle to virtual environments as well (Sloan, 2001). It has no sense to take care of people with disabilities in the “real world”, but not in the “virtual world”.

But nevertheless, to have a usable and accessible web site is not enough. We must go forward and include other important social and ethical dimensions to achieve e-Quality. For instance, aspects such as offensive content should be considered as well to improve access to Information Society.

Our research focus is based on the general ideas described, and is as follows:

  • To define main principles and variables that guaranties a proper access to information services.
  • To determine certain usability principles that any web must fulfil in order to make sure that any user can find and access to information.
  • To analyse accessibility principles for people with disabilities.
  • To establish a broader framework to determine the e-Quality concept that let any user access to information in a proper way.

Within this theoretical framework, we will analyze a case study to determine the ethical attitudes in organizations regarding the access to web information services.

REFERENCES

Environmental Systems Research Institute (2005): “What Is Usability?”, http://www.esri.com/software/usability/whatisusability.html [accessed el 01/06/2005].

Grewal, I., Joy, S., Lewis, J., Swales, K., Woodfield, K. (2002): “Disabled for life? Attitudes towards, and experiences of disability in Britain”, National Centre for Social Research on behalf of the Department for Work and Pensions, HMSO.

Gullison S., Blades R., Bragdon M., McKibbob S., Sparling M., Toms E. (1999): “The impact of information architecture on academic web site usability”, The Electronic Library, 17 (5), pp. 293-304.

Ivory M.Y., Sinha R., Hearst M.A. (2002): “Imporving Web Design”, IEEE Internet Computing, March – April, pp. 56-63.

Jackson-Sanborn, E., Kerri Odess-Harnish, K., Warren, N. (2002): “Web site accessibility: A study of six genres”, Library HiTech, 20 (3), pp. 308–317.

Korman R. (1998): “Helping users find their way by making your site “smelly”, WEBREVIEW.COM, May 15th, http://Webreview.com/wr/pub/98/05/15 [accessed el 01/06/2005].

Sloan, M. (2001): “Web accessibility and the DDA”, The Journal of Information, Law and Technology (JILT), No. 2, http://elj.warwick.ac.uk/jilt/01-02/ [accessed 01/06/2005].

W3C (2005): World Wide Web Consortium, WAI – Web Accessibility Iniciative, WCAG – Web Content Accessibility Guidelines, http://www.w3c.org [accessed 01/06/2005].