Comparing the concepts of mental load and stress

Mental load and stress are interrelated because they both stem from the relationaship between environmental pressures and the resources available to meet these demands. Both need to be differentiated to faciliatate precise theoretical conclusions. The study utilises a 2-dimensional model to explain 2 different states of stress. An 'activated state' is caused by high psychological demands where there is little control and a 'disorganised state' is caused by a heavy workload with a large amount of control. This shows that a large workload does not necessarily cause stress.