A natural basic income experiment began in the mid-1990s and how the kids (now in their 30s and 40s) are doing is incredible. As adults, they have fewer drug problems and their average IQ is higher. By age 26, the benefits of the UBI exceeded its cost by 3-to-1 thanks to better educational outcomes and reduced spending on crime and medical care.
https://academicminute.org/2014/06/jane-costello-duke-university-sharing-the-wealth/