In this brief, SHARE grantee Sharon Long and her research team provide a meta-analysis of research on Massachusett's health reform and an assessment of what these findings mean for the Affordable Care Act (ACA) and for the evaluation of the ACA's impacts.  In particular, they discuss findings from the range of studies that examine the effects of Massachusetts' health reform on non-elderly adults, focusing on work that has evaluated insurance coverage; health care access and use; and the affordability of care.