Belief in divine omniscient punishment does not reliably sustain cooperative behavior

Evidence

The religious version might be thought to be more effective (though scarcely less detestable), if people could be brought to believe it, but the observed level of behaviour in societies which allegedly have believed it seems notably not to bear this out. It may be that the certainty of a 100 per cent detection rate was offset by uncertainties about the practice of the court. — Diego Gambetta, Trust - Making and Breaking Cooperative…, 204

Categorization

• QUESTION: Worth chasing: the empirical claim that religiously-motivated societies do not cooperate noticeably more — what evidence exists for this?
• XREF: connects to: Divine love is one-sided while human love depends on reciprocity — Chuck Missler, The Kingdom, Power and Glory: The…, 838