Masks protect others, not just the wearer, perhaps even with an emphasis on the others. That might create a stronger social pressure for wearing a mask, and avo

Masks protect others, not just the wearer, perhaps even with an emphasis on the others. That might create a stronger social pressure for wearing a mask, and avoidance of stigma might compel people to wear one even in situations where it doesn't actually do much. There may be lots of other factors in play considering that these kinds of choices are largely social, so this might not actually be the reason the students make those choices, but that's a fairly obvious difference.