
be applied. One perspective may be to consider
design elements as well as design principles.
Design elements are the building blocks or
basic units in the construction of a visual image.
The
elements of design include line, direction,
shape, size, texture, value, and colour (Graves,
1951). On the other hand, principles of design help
make visual images agreeable and interesting to
watch.
Design principles include repetition,
alternation, harmony, gradation, contrast,
dominance, unity, and balance (Graves, 1951).
But, as may be analysed in the following sections,
other authors identified different design principles.
2.2 Gestalt
Atomism examined parts of objects (or things)
with the idea that these parts could then be put
back together to make wholes. Atomists believed
the nature of objects to be absolute and not
dependent on context. This perspective has his
roots in several sources like the medieval
interpretation of Timaeus of Plato. In the Timaeus,
Plato observes the geometric fact that five and only
five regular geometric solids are possible.
Gestalt theory first appeared the 90s of the XIX
century as a reaction to atomism, the prevalent
psychological theory of the time. Gestalt theorists
were fascinated by the way our mind perceives the
totality, even when there are incomplete elements
(Behrens, 1984, Mullet & Sano, 1995).
To the Gestaltists, objects are affected by
where they are and by what surrounds them so that
objects are better described as more than the sum
of their parts (Behrens, 1984). Gestaltists believed
that context was very important in perception. An
essay by Christian von Ehrenfels discussed this
belief using a musical example. Take a 12-note
melody. Play it in one key, say the key of mi. Now
changes to another key, say the key of do flat.
There might not be any notes the same in the two
songs, yet a person listening to it knows that it is
the same tune. It is the relationships between the
notes that give us the tune, the whole, not which
notes make up the tune. In another example, Moore
& Fitz (1993) starts with a very poorly designed
diagram and by using gestalt principles, transforms
it into one which is much more useful.
Gestalt principles are figure and ground,
similarity, proximity or contiguity, continuity,
closure, area and symmetry.
2.3 Multimedia Design
Because of the similarities between computer
based multimedia and web sites, it seems useful to
consider guidelines for design, which have been
developed for multimedia (e.g. Foley, et al., 1997).
On the other hand, animation, sound, text, and
pictures may be linked together on a web page, just
like multimedia that also links these elements
together.
Research into perception, animation, and
multiple-channel communication (Moore et al.,
1996) contains findings, which may be important
for web design.
Some studies indicated that pictorial
information is remembered much more easily than
text (Anglin et. al, 1996, Braden, 1996, Horton,
1994) leading to the dual code theory: people store
information in two ways depending on whether it
is verbal or pictorial information.
Because text accompanied by pictures or
animations corresponds to saving information into
two separate ways in the brain (encoded verbally
and as a picture) there is more likelihood that
people will remember the information if it is
presented in both formats. On the other hand, care
must be taken when combining different modalities
(picture, text, audio, animation) simultaneously.
Certain combinations overflow the information
processing capacities of the brain. For example,
combining audio with text seems to overload our
channels. Audio may be combined with pictures or
animations, or text with pictures or animations,
given that the text and audio appears to be stored
and processed in a different manner than the
pictures and animations.
3 PRINCIPLES FOR WEB SITE
DESIGN
There are a set of principles that may be called
aesthetic principles and includes concerns such as
balance, harmony and unity (Schwier &
Misanchuk, 1993 Misanchuk, et al., 2000). In fact
according to Misanchuk, et al. (2000). “Balance,
unity, and harmony are three primary properties
that designers manipulate in order to create
aesthetic experience. When these properties are
manipulated in such a way that the effects satisfy
people's natural (and conflicting) cravings for
order, predictability, surprise and novelty, then
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