Main content: To create a development concept and a model for the description of healthy development processes and for the diagnosis and treatment of developmental disorders: which take into account the emotions as a bridge between the environment, body, mind and experience, i.e. the perceptual, judgmental, motivating, and activating function of pleasant and unpleasant feelings, which accept the oscillating dynamics between unpleasant and pleasant, positive and negative feelings as a development-promoting principle in unclear, ambiguous, and contradictory situations, which reveal supporting and destructive affect patterns (i.e., the desirable and undesirable or forbidden feeling types and intensities) of the private and professional attachment figures and groups, the social, cultural, and religious institutions, which call into question, through the analysis of the affect pattern, the contrast between normal and abnormal, healthy and sick, which reveal psychosocially impaired persons, who, under the “guise of normality”, put a burden on, disturb or even destroy the development of individuals, groups, communities, and institutions, (cf. especially the descriptions of the hysterical, paranoid, borderline, and sociopathic personality disorder), which consider, during the analysis of healthy and impaired processes, not only the behaviour patterns and the symptoms (i.e., the detailed complexity), but also the emotional dynamics (i.e. the dynamic complexity), which offer realistic and practice-oriented procedures (tests and questionnaires) to assess the disturbances in the affect patterns and the emotional dynamics of individuals, groups, and institutions, which take into account the influence of the subconscious, i.e., endeavouring to recognise the influence of past emotional experiences and finding solutions for affect inhibitions which cause development disorders.