Fig. 2
Schedule of enrolment, interventions, and assessments. Legend: A = Adaptation phase: A short nature documentary was presented to familiarize participants with the laboratory setting and the method applied; E = Experimental phase: Participants were randomly assigned to one of three conditions. Times of measurements: t0 = screening phase; t1 = baseline measurement before watching any films; t2 = after watching the nature documentary; t3 = after watching the second film