An interesting concept to consider related to the role of background knowledge is the negative influence it may have. Incorrect background knowledge can hinder comprehension. For example, some reader may have misconceptions about how AIDS is contracted. Some may believe that you can get AIDS by kissing or swimming in a pool. These misconceptions may interfere with a readind passage on AIDS, and you may have to correct the backgrohnd knowledege throungh a prereading activity before reading comprehension can be achieved.