Werner Joseph Severin has explored communication theories on a wide spectrum through this book, and since our lives are based entirely on communication, persuasion is used daily in different forms, on basis of different theories, with the aim of changing our attitudes and directing them towards the desired outcome, so chapter 8 "theories of persuasion" focused on persuasion. Since being exposed to new information every day and changing our attitudes accordingly, persuasion has achieved its goal, for example, if you like something and the new information you have been exposed to has changed your attitude towards it, then this is successful persuasion communication. Persuasion can influence our beliefs like will, as what you believe to be true can be altered by a persuasive communication. This chapter aims to explain how persuasive communication can change attitudes. Attitudes are made up of three components: feelings, beliefs and actions, which are affective, cognitive and behavioral respectively. And they have two structures which are the inter-attitudinal structure and the intra-attitudinal structure. While interattitudinal structure refers to the grouping of attitudes together to elaborate an ideology, intraattitudinal structure refers to how the components of attitudes are related. Furthermore, the concept of attitude is one of the most indispensable and distinctive concepts of contemporary American social psychology, as described by psychologist Gordon Allport. It also reveals that the term "attitude" has replaced vague terms such as habit, feeling, instinct and social force in psychology. Additionally, research has been conducted over the years to understand attitude change. Starting with the first ever attitude change study in 1923 conducted by Rice and Willy that t...... middle of paper ...... compared to support was. It also showed that the active condition (writing) had a smaller effect on making beliefs resistant to persuasion than the passive condition (reading). Another experiment examined whether refuting a series of attacks would prevent one from being influenced by other attacks. The results were as expected, refutation of some attacks made other attacks less credible, and pre-exposure to attacks may cause the person to realize that their beliefs are vulnerable and need to add support to them. Recent studies have revealed that threat plays an important role in vaccination in part because people tend to protect their beliefs when attacked, so threat evokes people's desire to make their attitudes resistant to change. Furthermore, if the problem were not significant, the inoculation would probably not take place. Furthermore, inoculation has been very successful in health communication campaigns.