In the presence of a threat from radiation, such as that posed by expo
sure to contamination caused by the Chernobyl accident people are actu
ally confronted with a variety of 'threats'. These include a mixture o
f components having objective and subjective elements. The management
of countermeasures, in particular, contributes to the definition of th
e situation which labels the threats people encounter. Some findings f
rom the affected areas in the former Soviet Union are discussed to dem
onstrate the impact of several factors on the affect response of the p
opulation.