Generally, people construct their mind and predict the
future situation of reality by sensory system and enrich with
their past experiences, which developed through association
with others. According to cognitive science, this is known as
theory of mental model [3]. The theory of mental model is “a
mental image of the world around us that we carry in our
heads depicting only selected concepts and relationships that
represent real systems” [1]. In the field of computer, the
concept of mental model has been extensively applied to
investigate various aspects of the system environment which
are enormous. The definition of mental model in the field of
computer study can be defined as “the users’ understanding of
what the system contains, how the system works’ and why the
systems work in that manner” [2].
In fact, the mental model can be applied to investigate the
computer users both normal sighted and the blinds. For the
normal sighted users, there are several research works have
applied the model to investigate the computer related studies
in various aspects such as programing [1][2][11], designing
[12], developing [1][12], human computer interaction