This paper presents an investigation concerning the introduction of Extreme Programming (XP) in software development organisations. More specifically the concept of using a decision support method known as the Analytical Hierarchy Process (AHP) is evaluated by a group of students and a group of developers and the outcome is compared to experiences from an XP case study. The results provide an indication that different practices are thought to be easier and more effective to implement in the two groups. A company considering implementing only a few practices can use this as help for deciding which practices to implement. Companies introducing all practices can use the results of this kind of method to see where more attention might be needed after or during the introduction of XP.