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0 O’Ne ll, Arned llo-Sánchez, & Tangney<br />

Figure 4. Course viewed in a text only Lynx browser<br />

sources were used to gain access to participants. These were The Blind Computer<br />

Association of Britain (BCAB) mailing list; The Irish Visually Impaired Computer<br />

users (VICS) mailing list; personal contacts by the researchers; and a call for participants<br />

through the blind interest radio programme, Audioscope. Twenty people<br />

expressed initial interest in our programme; of those, only eight participated in the<br />

course. Out of the eight participants, five were from the BCAB mailing list, two<br />

from VICs, and one the sole respondent from the Audioscope interview. Of those<br />

who started the course, four completed it, one withdrew due to health problems,<br />

two due to personal reasons, and the remaining one due to technical difficulties not<br />

related to our environment. The relatively small sample size in this case is consistent<br />

with research into instructional design for BVI people. For example, Van Reusen<br />

(1994) based his work on educational theory, and provided anecdotal evidence of<br />

the experience of a single student. Similarly, Gouzman and Kouzlin (2000) focus on<br />

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