 Where stress training is optional or voluntary, a gradual buildup will allow learners to continue as far as they feel they are able to manage.Experimental findings show that technical skill is a necessary but not always a sufficient condition for effective performance in a stressful environment, and that skills learned from stress training generalise to different tasks and stressors.Familiarity with the stressors characteristic of the occupation is needed in order to reduce uncertainty and to improve effectiveness of learning.