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Psychological research shows efforts to change people's judgments about the risks associated with health-related behaviors can successfully change those behaviors.
Findings
Judgments about the likelihood of contracting a disease are directly related
to willingness to act in ways that reduce risk. Moreover, risk judgments
are related to worry, and both factors increase motivation to protect
oneself from health threats. For example, in a review of studies
on breast cancer screening, psychologist Kevin McCaul, PhD, and
colleagues found that women who think they are likely to get breast
cancer some day are more likely to have a mammogram than are women
who think that they are unlikely to get breast cancer.
Similarly, Kim Witte, PhD, and her associates have demonstrated
that interventions affecting both risk judgments and fear produce
self-protective behavior. For example, they directed messages about
skin cancer to college students in the southwestern United States
and found that scary messages about the awful things that can happen
to one's skin successfully promote plans to reduce sun exposure,
especially when the message also convinced students that sun-avoidance
was very likely to reduce the negative effects of sun exposure.
In a completely different domain, psychologist Neil Weinstein,
PhD, and his colleagues at Rutgers University sent letters and videos
to nearly 2,000 homeowners in Columbus, Ohio. One video explained
that a high risk of radon problems existed in area homes, and this
message encouraged homeowners who were undecided about testing their
home to decide to do so. Results of the study show that the risk
messages were effective in getting people to move a step closer
to taking action, especially prompting those who were undecided
about testing to decide to get their homes tested for radon.
Most importantly, research has shown that efforts to change
people's judgments about the risks associated with many, very different
health-related behaviors can successfully change those behaviors.
For example, in one experiment, adult daily smokers watched a videotape
showing interviews with smokers and ex-smokers who had experienced
different smoking-related illnesses. The videotape increased the
viewers' risk judgments, their motivation to quit smoking, and their
likelihood of quitting smoking over the ensuing 3 months.
Contrary to the widely held belief that adolescents think that
they are invulnerable, researchers at Iowa State University and
the University of California San Diego have shown that risk messages
can be successful in changing the behavior of young people. Psychologist
Frederick Gibbons, PhD, and his colleagues showed college students
photographs of their faces using a filter that revealed the skin
damage that they had already sustained from the sun. They also gave
them information about the risks of sun exposure, such as premature
skin wrinkling and skin cancer. This intervention was successful
in decreasing the use of tanning booths over the next month.
Significance
These findings support the efforts of health professionals to remind patients about their risk of disease and suggest that the increased levels of self-protective behaviors that people are likely to adopt offset the minor worries that might accompany such reminders. The findings also suggest, though, that people who are responsible for explaining health threats to the public need to do so carefully, making sure that the behaviors they recommend (cancer screening or increased exercise, for example) actually will reduce the health risks that people are trying to avoid.
Practical Application
Health professionals are now applying these findings in public education programs.
Health educators in North Dakota created a video intended to increase
personal vulnerability to breast cancer among older women. The video,
called "Aware and Alive," depicted women who had been diagnosed
with breast cancer through mammography screening. In addition, a
radio drama aimed at Ethiopian youth was designed to increase perceptions
of risk and efficacy toward HIV/AIDS prevention. The 26-week long
radio drama, called "Journey of Life," featured characters experiencing
the negative consequences of their actions (to increase perceived
threat) as well as the positive benefits of effective actions (to
increase perceived efficacy).
It is good to carefully consider threats to your health and how
threats to your health might affect your family, job, friendships,
and ability to enjoy life. Health professionals who talk seriously
with their patients about these issues are having an impact - informing
their patients and motivating them to engage in healthier behaviors.
Cited Research
Copeland, A.L., & Brandon, T.H. (2000). Testing the causal role
of expectancies in smoking motivation and behavior. Addictive
Behaviors, Vol. 25, pp. 445-449.
Gibbons, F.X., Gerrard, M., Lane, D.J., Mahler, H.I.M., & Kulik,
J.A. (in press). Using UV photography to reduce use of tanning booths:
A test of cognitive mediation. Health Psychology.
McCaul, K.D., & Mullens, A.B. (2003). Affect, thought, and self-protective
health behavior: The case of worry and cancer screening. In J. Suls
and K. Wallston (Eds.), Social Psychological Foundations of
Health and Illness, Malden, MA: Blackwell Publishers.
Stephenson, M.T., & Witte, K. (1998). Fear, threat, and perceptions
of efficacy from frightening skin cancer messages. Public Health
Reviews, Vol. 26, pp. 147-174.
Weinstein, N.D., Lyon, J.E., Sandman, P.M., & Cuite, C.L. (1998).
Experimental evidence for stages of health behavior change: the
precaution adoption process model applied to home radon testing.
Health Psychology, Vol. 17, pp. 445-453.
Witte, K., Meyer, G., & Martell, D. (2001). Effective health
risk messages: A step-by- step guide. Newbury Park, CA: Sage.
American Psychological Association, July 7, 2004
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