Miller’s vision (1969) of sharing findings from psychological studies with the general public as a means to help solve societal challenges, constitutes the motivational base and the ultimate goal of this investigation. For this dissertation an online-based program Conflict Food was developed and subsequently analyzed to enhance the conflict competences of said general public. Using scientific discourse methods, this work investigates to whether Miller's vision can be integrated into the science of psychology and, as a result, provides a possible justification for following Miller. Based on communication theories and the mediation concept developed from the perspective of the psychology of justice by Montada and Kals (2013), three video-based transfer formats were produced and analyzed according to what extent their use can increase conflict competences. Study 1 (N = 90), using an experimental control group design, identified a significant improvement of knowledge-based conflict competence (d = 1.21). In a quasi-experimental design, study 2 (N = 110) revealed higher values concerning ability-based competences (d = .79). This work determined that developing an inventory list to measure mediation-specific conflict competence (IMKK) enabled a more sophisticated evaluation of the program effectiveness and allowed for to differentiation between various competence facets (study 3). Study 4 (N = 499) used an experimental control group design and a representative quota sample. By using the IMKK for evaluation, an enhancement of the conflict competences was seen again. After watching the videos, the treatment-group showed significantly more conflict-specific knowledge (d = 1.2), improved abilities (d = .82) and reported a more competent behavior in dealing with social conflicts (d = .32). In a follow-up survey long-term effects were found in all competence facets six month after the treatment.The results are discussed in relation to Miller’s vision and the further development of Conflict Food followed by a critique of methodology.