Context-Constrained Judgment of the Perceived Risk of HIV/AIDS1

This study introduces a computer method for assessing perception of stimuli presented in a constrained context. The method is illustrated through experiments on perception of the risk of becoming infected with HIV and AIDS. In five experiments, context-constrained judgments (CCJ) or context-independent judgments were obtained from 258 undergraduates. Participants judged the risk of contracting HIV/AIDS for a variety of target populations, including themselves. The CCJ method results in greater response discrimination among the salience of perceived risk factors than does a context independent method. This outcome has potential implications for education and intervention programs to control the spread of HIV.