During the past decades in clinical psychology, it was particularly the transdisciplinary approach of synergetics (Haken 1990a) which inspired a specific nonlinear and complexity research on cognition (Haken 1990b; Tschacher and Dauwalder 1999), social interaction (Nowak and Vallacher 1998; Tschacher 1997), etiology and dynamics of mental diseases (eg, Schiepek et al. 1992; Tschacher and Kupper 2002), and psychotherapy (for an overview see Haken and Schiepek 2006). Synergetics describes, measures, and explains the autonomous processes of pattern formation and pattern transitions in complex nonlinear systems. Founded on Haken’s fundamental discovery that these processes do not depend of the matter of the systems they occur in, synergetics became one of the most important inspirations to many scientific fields and topics. Especially, Haken early transferred synergetics to brain research (eg, Basar et al. 1983), since the brain is an outstanding example of a complex, self-organizing system. Today, it is widely accepted that the brain and a serial computer not only differ profoundly, but there is almost nothing they share: No wonder in light of the more than 1011 nonlinear interconnected neurons forming a dynamic mega-network of neural networks with essential features like arrays of emerging and submerging synchronizations, its flexibility and ever changing pattern formation, working at the edge of chaos, or realizing combined (activating and inhibiting) feedback mechanisms following the principles set forth by synergetics which describes the laws of selforganizing systems (Haken 1996, 2002). Taking a closer look at most of the phenomena clinical psychology is concerned with it becomes obvious that they appear to be of dynamic nature. Human development processes, human change and learning processes, the dynamics and prognosis of mental disorders, problems mani-festing in social systems like couples, families, teams, or the question of how psychotherapy works: Self-organization is a ubiquitous entity.