Who is more likely to be nice this holiday season? New research sheds light on the relation between religion and blood donation, how one’s image of God influences an individual’s sense of moral obligation and likelihood to volunteer and whether being new to a congregation can lower or heighten stress levels for clergy.

It is not just Western Christians in this Advent period who are tempted to ignore their faith’s warnings to focus on spiritual rather than material goods. New studies are revealing the ways members of different global faiths may transcend – or fall prey to – consumer cultures willing to co-opt even their most sacred festivals to move merchandise.