A self—designed “Folk Belief Questionnaire”(FBQ)was administer among young men aged 18to 20 years in Taiwan,Jilin,and Guangdong provinces,to compare their attitude to and perception on sexual issues,koro syndrome,and the transcendent religion.Some responses to the FBQ differed significantly in the subjects amongthese three regions,suggesting that the occurrence of epidemic koro may be related to special local folk belief.