There is a wonderful social experiment I learned about long time ago named the the marshmallow test.
The study offered people the option to either have a marshmallow instantly or wait and have more. The original study from the 1960s and 70s appeared to show a link between the ability to delay gratification - which demonstrated a capacity for emotional self-regulation - and long term social outcomes, including higher intelligence and more successful employment. And thus connected poverty to the "behaviour and mindset" of the poor.
However, The latest study, which used a much more robust design, found that once socioeconomic characteristics were accounted for, the ability to delay gratification had a negligible impact on outcomes in later life. Environmental factors largely determined success.
The conditionality project and the marshmallow test have smashed one simple, powerful myth: that if the poor were to change their behaviour (or ‘build character’), they too could become successful. The structures of exclusion, inequality and marginalisation they face become either immaterial or secondary.
Recent research supports arguments that it is not poor people’s inherent behaviours or cultures that impacts how they live and the decisions they make, but rather the material scarcity and precarity that they face. A groundbreaking study by Eldar Shafir and Sendhil Mullainathan found that the experience of scarcity imposes a heavy cognitive burden on those affected. This can mean they make decisions for the short rather than long term, and lack the cognitive resources to take on mentally demanding tasks because so much of their energy is exerted on the day-to-day challenge of making ends meet. Experimental studies show that everyone (not just ‘the poor’) can be impaired in the same way if they experience conditions of scarcity.
https://www.thersa.org/blog/2018/06/the-marshmallow-test-and-the-crisis-in-social-policy