Nov 10, 2008

Relationship between effective reading and human-computer interaction

Barbora Drobíkováand

Richard Papík

Nov 10, 2008

HCI and information science

• user• end-user• user behavior / information behavior

• user = reader

Nov 10, 2008

Cognitive processes

• following human senses are frequently used by modern computer and information systems for communication purposes:

SightHearingTouch

Nov 10, 2008

Sight• approximately 90-95% of information is

forwarded to the brain for subsequent processing by eye-sight

• trends: information visualization• research: large text databases, graphic user

interface, software tools oriented to computer graphic

• research activities reflect the fact that human eyes (sight) interpret visualized data much faster and much more effectively than standard text

Nov 10, 2008

Psychological and physiological research

• 2nd half (part) of the 19th century• 10s - 20s of the 20th century, especially

American school of experimental psychology

• special reading research => reading courses

Reading as perception of text

Cybernetic reading model

Nov 10, 2008

Reading from screen vs from paper

• Dillon : Reading from paper versus reading from screen

• Dyson : How physical text layout affects reading from screentext variables – line length, character density,

type size, characters per line, columns, window size, lines per screen etc.

• conclusion that reading from screen is by 27% slower than printed text reading

Nov 10, 2008

Screen and information perception

• 70s and 80s - experts of computer science, also HCI

• 80s - collaborative tools/systems in text processing (inf. science journals)

• during the 90s - information science, information and library schools

Nov 10, 2008

Internet role

• boom of online systems and variety of information users (children, students, scientists etc.)

• new dimension of research

Nov 10, 2008

Ergonomics and ISO 9241

• full title is Ergonomic requirements for office work with visual display terminals (VDTs)

• importance of the ISO 9241 group norms for maintaining a dialogue with information systems

Nov 10, 2008

Timeless recommendations

• Clarity (the information is provided in a clear and precise manner);

• Distinctiveness (the information presented is distinct);• Brief nature (users receive only information necessary

for implementing their tasks);• Congruity (the same information is presented uniformly

in the same manner expected by the users);• Ability to ascertain (the focus of users on the

information requested);• Readability (the information is easy to read);• Lucidity (the content is clear, non-ambiguous,

cognizable and can be interpreted).

Nov 10, 2008

Future?

Nov 10, 2008

A question?A suggestion?

A protest?

Thank you for your attention

Richard PapíkBarbora Drobíková