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A three-year UBI study done in Germany shows that a guaranteed monthly check increased labor market exploration and increased work satisfaction.
(www.pilotprojekt-grundeinkommen.de)
True, but often as far as I know research like that is about how people respond to sudden changes and local crises, not necessarily how they would react in a different social system. But I do also expect people to treat each other better if the conditions of their lives are better.
The studies I happen to know about focussed on population density and resource abundance/scarcity. While not an exact analog I think they do give a decent estimate of this situation