“Fidelity” is defined as “the degree of similarity between the training situation and the operational situation which is
simulated.” It is a two dimensional measurement of this similarity in terms of : (1) the physical characteristics, for
example visual, spatial, kinesthetic, etc ; and (2) the functional characteristics, for example the informational,
stimulus, and response options of training situation”. (Hay & Singer, 1989: 50). Garris et al (2002) add to that
definition “structural validity”, i.e. processes which appear in the simulation, as well as its value in predicting reality
given the degree of psychological realism in the simulation. From the point of view of learning, Claudet (1998) states
that simulations reproduce situations, dilemmas and actors who participate in them as realistically as possible in
order to provide learners with the opportunity to put into practice and to transfer their experience in a "quasi-real"
situation.