In light of new evidence and the implementation of managed care plans this article refutes the conclusions initially derived from the 1970s RAND Health Insurance Experiment and determines that comprehensive parity within a managed care context has little impact on total healthcare spending. 

Barry, C. L., Frank, R. G., & McGuire, T. G. (2006). The costs of mental health parity: Still an impediment? Health Affairs, 25(3), 623-634. DOI: 10.1377/hlthaff.25.3.623. http://content.healthaffairs.org/cgi/content/abstract/25/3/623 © 2006 by Project HOPE. 

Authors: Colleen L. Barry, Richard G. Frank, Thomas G. McGuire