Figure 2. Probabilities for events occurring estimated from the observed data.

Panel (A) shows probabilities estimated from the experimental data (event A – participant opens the door for the other pedestrian from the central room, event B – computer-controlled pedestrian gets rescued, event C – participant opens the door for the other pedestrian from the corridor). Panel (B) shows P(B) conditional on the occurrence of event A. Dashed lines indicate the fit of the model presented in Table 3 to the observed data. Panel (C) shows probabilities for events occurring predicted from model fits to the data. We show the fit of the model to the observed data and the predicted values for P(B) conditional on the occurrence of event A and the gender of participants. This highlights the effect behaviour inside the central room and participant gender have on P(B). For clarity of illustration, the effect of age is not shown here. As an indication, 11 years of age difference produce the same effect size as gender (see Table 3). In predictions from the statistical model, we set the age to the median value (23 years) and the explanatory variables for training data to their mean value. See text and Table 3 for descriptions of the statistical model. Error bars show standard errors estimated from model fits.