Procedure
This study was conducted with the ethical approval of Eötvös Loránd University’s institutional review board, in accordance with the Declaration of Helsinki, and with the informed consent of the participants. After consenting, participants first filled out the “bullshit” receptivity scale In the A testimonial explaining one of the six strategies. First, participants could read six testimonials explaining six strategies.Second, they were requested to write a brief letter to a close family member in which they summarize the six strategies and were asked to reflect on the best arguments and advice that would convince their relatives to implement these strategies in their everyday life (for the psychological mechanisms and the instruction see Fig. Psychological mechanisms of the self-persuasive message. After reading the six testimonials, participants wrote a letter to a loved one in which they explained the strategies.A randomly chosen letter following the above-described instructions (translated by DeepL).The structure of the The timeline of our study can be seen in Fig. Timeline.