"ÒMessage design
involves planning for the manipulation of the physical form of the
messageÓ (Seels & Richey, 1994, p. 31).
"Message
design is embedded within learning theories (cognitive, psychomotor,
behavioral, perceptual, affective, constructivist)
in the application of known principles of attention,
perception, and retention which are intended to communicate
with the learner.
"This
sub-domain is specific to both the medium selected and the learning task.