From a traditional aspect, behavioral change is conceptualized as a sh
ift from one stable state to another, from stable unhealthy behavior t
o stable healthier behavior. This approach will influence the type of
intervention program to be adopted as well as the type of assessment i
nstrument applied. A concept supported by the results of studies invol
ving a large number of subjects, which enable the natural process of b
ehavioral change to be observed, suggests that behavioral change is a
non-stable condition with distinct stages called precontemplation, con
templation, action, and maintenance. There may be relapse at any stage
and this should be interpreted as a natural part of the change proces
s. Health educators are confronted with different tasks at each level,
and by addressing these tasks and tailoring the intervention programs
to suit the stage of the individual subject, better support during th
e process of change can be given. A project involving cooperations bet
ween university institutes and the pharmaceutical industry has develop
ed and evaluated education programs which address different stages of
change in a primary care setting. Action-oriented programs for the pre
vention of coronary disease, sleep disturbance, and chronic pain have
proven to be effective. Target behaviors are smoking, stress managemen
t, nutrition, and physical exercising. These programs have recently be
en complimented by others addressing precontemplation and contemplatio
n stage subjects. Further research will have to be carried out in orde
r to find assessment instruments designed to assign the right program
to the right person.