Community psychiatrist Ken Thompson, M.D., who reviewed the report, said the study demonstrates the effects of social environment on mental health. “We have been so focused on what happens inside people’s heads, in their brains, that we have tended to neglect how the environment shapes how people feel about themselves,” Thompson told Psychiatric News. “For this population of very poor African-American or Latino people, even a relatively modest change in circumstance produced a significant change in how they feel about their own well-being. That has real implications for public policy,” he said.