This dissertation-project examines how climate-change-denial can be effectively countered in video content. The focus is on the question of how proactive strategies (building resilience) and reactive strategies (corrections) can be combined synergistically. The aim is to develop a deeper understanding of the psychological mechanisms that influence the acceptance of corrections. Furthermore, this dissertation project aims to develop evidence-based recommendations for science communication and internet platforms. The dissemination of misinformation about climate change, particularly through online videos, contributes to public skepticism and hinders necessary climate action. To counter these psychological barriers, research has so far mostly pursued two separate paths: proactive strategies that build resilience against misinformation and reactive strategies that correct misinformation after exposure. This project aims to combine both approaches in an integrated model. A central challenge is the so-called “Continued Influence Effect” - the tendency for information that has already been refuted to continue to influence thinking and beliefs. Experimental studies are therefore investigating how video-based misinformation in particular can be optimally corrected. Design principles from the cognitive theory of multimedia learning (CTML) will be applied. The project tests the central assumption that a combination of a proactive message (e.g. about the scientific consensus) and a subsequent reactive correction has a synergistic, i.e. mutually reinforcing, effect. The results should provide a deeper understanding of concrete psychological mechanisms while providing practical, evidence-based guidance for policy makers, video platform operators and science communicators.