Low income was less strongly predictive of underachievement for children who had been in higher quality care than for those who had not. Consistent with a cognitive advantage hypothesis, higher quality care appeared to promote achievement indirectly via early school readiness skills. Family characteristics associated with selection into child care also appeared to promote the achievement of low-income children, but the moderating effect of higher quality care per se remained evident when controlling for selection using covariates and propensity scores.
As they say, another brick. High quality child care helps poor kids think more like rich kids.
Goodness, I just realized that was published 6 weeks ago. I obviously missed it. I need to go through my stack of Child Developments and see what else I missed.