The increase in various social problems has caused practitioners to review fear appeals in order to influence behaviour. The Aids pandemic is a major concern and some advertising campaigns do not seem to be producing the expected results. This study used structural equation modelling to investigate whether the use of fear increases the likelihood of adopting appropriate behaviour pertaining to HIV/Aids prevention. Fear, attitude towards the advertisements, severity, susceptibility and efficacy were examined to ascertain the influence of fear appeals on a specific market segment. The findings of this paper indicate a relationship among susceptibility, fear, attitude and behavioural intent.