The revised edition provides a modular presentation of 30 training-relevant theories and their application possibilities in seminars: presentation of the theory, possible variations, practical transfer, and suggestions for transitions to other topic areas. The topic areas of communication, conflict, motivation, self-regulation, stress, and leadership offer foundational knowledge for junior trainers and in-depth background knowledge as well as new application possibilities for senior trainers. The charm of "Trainer-Kit" lies in the fact that you can use the content modularly. Each of the six chapters is divided into individual sections, each of which describes a theory or model in detail. These presentations follow the same structure.