This
book, however, draws attention to important research which began to surface
in the
late 1980s documenting that children of single - parent
households do worse on a variety of measures of child welfare independent of race, gender, educational level and place of residence.
The research about two parent
households, blacks and whites, with the same educational background, age, and years of employment having similar
household incomes was from research by Thomas Sowell
in the
late 80's — it was cited
in one of his
books (I think «Ethnic America») and he talks about that research
in many of his lectures, some of which are on YouTube.