“…This method is often used to recruit hidden populations that are difficult for researchers to access (Faugier & Sargeant, 1997) -as it is the case of sceptics and atheists, considering that most of the Portuguese population professes a religious creed (Censos, 2011). In conducting the study, one concern was to ensure representativeness among practising believers, non-practising believers, sceptics and atheists in order to overcome the bias that a sample predominantly of believers might otherwise introduce to the results, as has already been demonstrated in other studies (e.g., Handal et al, 2017;Zinnbauer et al, 1997). To mitigate this effect, the study of Kimball et al (2009) was taken into account, which concluded that individuals from Humanities, in special social sciences, tend to be more secular or less religious, as compared to those from scientific areas.…”