— For humanoid robots that should assist humans in their daily life the capability of an adequate interaction with human operators is a key feature. A key factor for human like interaction is the usage of non-verbal communication. Therefore robots must be able to have some kind of emotions. These emotions mainly depends on the achievement of the goals of the interaction. Psychologists point out that motives generate these kind of goals to humans. Because of this, this paper presents a motive model for the emotion-based architecture of the humanoid robot ROMAN. For the implementation of these motives a behavior-based approach is used. Furthermore some experiments concerning the functionality of the motives of interaction are presented and discussed.