The widespread interest in "stressful" aspects of contemporary society
which contribute to its burden of illness and diseases (e.g. gastro
intestinal, cardiovascular) has led to a large number of state- ments
and reports which relate the manifestations to a maladaptation of the
individual. Furthermore, recent research suggests that under some condi
tions stress may have a more generalized effect of decreasing the body's
ability to combat destructive forces and expose it to a variety of
diseases. Breakdown in adaptation occurs when an individual cannot cope
with demands inherent in his environment. These may be due to an
excessive mental or physical load, including factors of a social or
psychological nature and task performance requirements ranging from
those which are monotonous, simple and repetitive to complex, fast,
decision-taking ones. Experience shows however that not all people
placed under the same condi tions suffer similarly, and it follows that
to the social and psychological environment should be added a genetic
factor influencing, through the brain, the responses of individuals. It
is clear that, besides human suffering, this "breakdown in adaptation"
causes massive losses of revenue to industry and national health
authorities. Thus a reduction in "stress", before "breakdown" occurs, or
an improvement in coping with it would be very valuable.