ABSTRACT
Training is a process aimed at developing specific skills, knowledge or attitudes. In Open- and closed-loop systems of model of a training system the original input, equivalent to the power supply in the central heating system, comes from the store of information which may be in the brain of the instructor, a tape, film or other source. The actual training course development follows and this particularly involves a selection of the training method and instructor requirements. Programmed instruction owes its origin to an awareness of the value of feedback in training and to economic pressures being applied to minimise training costs. High fidelity is required in a training device when a trainee must learn to make discriminations and where the responses required are either difficult to make or are very critical to the operation. Psychological fidelity depends upon the perception of the training device by the individual student and is not necessarily dependent on either equipment or environment fidelity.
