I would like to thank my promotor, prof. Frans van Eemeren, and my co-promotor, dr. Jean Wagemans for their invaluable guidance. I cannot imagine a scenario in which this dissertation would have seen print without their support and ever-sharp critique. This critique might have ruffled my spirits at times, prone as I am to think my ideas are just terrific, but Frans and Jean were always right. Their tact and patience during these four years have left a lasting impression on me. I shall aim to follow suit as much as possible in my own academic life. I would also like to thank my colleagues at the University of Amsterdam. The Department of Speech Communication, Argumentation Theory and Rhetoric has been a place of fertile academic discussions and even more fertile non-academic ones. I am especially grateful to dr. Francisca Snoeck Henkemans for encouraging me to apply for the PhD position that resulted in this dissertation and to my officemates, dr. Roosmaryn Pilgram, drs. Jacky Visser, and dr. Bert Meuffels, for tolerating me and my ways in room 5.09.For their unconditional encouragement, meaning that they encouraged me without really knowing what exactly I was doing, I thank my family and friends. They helped me keep my feet on the ground and put things in perspective even when the big, scary deadlines were hanging over me. I hope they realize how important they were and still are.Finally, I would like to thank Carmen, the girl I am trying to impress with all this, for being funny and sweet all these years.