Objective: To develop valid and realistic manipulations for video-vignette research using expert opinion rounds, in preparation of an experimental study on clinicians' (un)reasonable argumentative... Show moreObjective: To develop valid and realistic manipulations for video-vignette research using expert opinion rounds, in preparation of an experimental study on clinicians' (un)reasonable argumentative support for treatment de-cisions in neonatal care. Methods: In three rounds, N = 37 participants (parents/clinicians/researchers) provided feedback on four video -vignette scripts and completed listing, ranking, and rating exercises to determine which (un)reasonable argu-ments clinicians may provide to support treatment decisions. Results: Round 1: participants deemed the scripts realistic. They judged that, on average, clinicians should provide two arguments for a treatment decision. They listed 13-20 reasonable arguments, depending on the script. Round 2: participants ranked the two most salient, reasonable arguments per script. Round 3: participants rated the most plausible, unreasonable arguments from a predefined list. These results guided the design of 12 experimental conditions. Conclusion: Expert opinion rounds are an effective method to develop video-vignettes that are theoretically sound and ecologically realistic and offer a powerful means to include stakeholders in experimental research design. Our study yielded some preliminary insights into what are considered prevalent (un)reasonable arguments for clinicians' treatment plans. Practice implications: We provide hands-on guidelines on involving stakeholders in the design of video-vignette experiments and the development of video-based health communication interventions - both for research and practice. Show less
