Unprotected sexual intercourse is the principal means of transmission
for HIV; the virus associated with AIDS. In the absence of effective m
edical treatment, the modification of sexual behaviour remains the mos
t important method of containment. A cognitive behavioural model of ri
sky sexual behaviour is described. Intervention strategies suggested b
y the model are discussed in some detail. These include a novel proced
ure that potentiates state dependent memory effects. Finally, three ca
ses are presented in order to underscore key points.