Study design. R: Randomization of 30 5th and 6th year medical students and 30 medical laypersons into early intervention group (EI) and late intervention group (LI). ICT: informed consent talk performed by an advanced medical student with a medical layperson. X: intervention (communication training for the medical students aiming to teach how to reduce the cognitive load). C: comparison intervention (lecture on ECG interpretation). Every medical student conducted three ICTs with three different medical laypersons.