Yet another article by members of the Pain Research Group got published recently in the Frontiers in Psychology. Elżbieta A. Bajcar, PhD and Przemysław Bąbel, PhD reviewed existing literature on social learning in placebo research and proposed a model of transmission of pain-related information from the observed model to the observer.
Bajcar, E.A. & Bąbel, P. (2018). How does observational learning produce placebo effects? A model integrating research findings. Frontiers in Psychology, 9, 20141. PDF