Latest from Oren Cass ’05:

“Evidence-based policymaking” is the latest trend in expert government. The appeal is obvious: Who, after all, could be against evidence?

Most EBP initiatives seem eminently sensible, testing a plausible policy under conditions that should provide meaningful information about its effectiveness. So it is not surprising to see bipartisan support for the general idea. Speaker of the House Paul Ryan and Senator Patty Murray even collaborated on the creation of an Evidence-Based Policymaking Commission that has won praise from both the Urban Institute and the Heritage Foundation.

But the perils of such an approach to lawmaking become clear in practice. Consider, for instance, the “universal basic income” campaign. Faced with the challenge of demonstrating that society will improve if government guarantees to every citizen a livable monthly stipend, basic-income proponents suggest an experiment: Give a group of people free money, give another group no money, and see what happens. Such experiments are underway from the Bay Area to Finland to Kenya to India.

No doubt many well-credentialed social scientists will be doing complex regression analysis for years, but in this case we can safely skip to the last page: People like free money better than no free money. Unfortunately, this inevitable result says next to nothing about whether the basic income is a good public policy.

The flaws most starkly apparent in the basic-income context pervade EBP generally, and its signature method of “controlled” experiments in particular. The standard critique of overreliance on pilot programs, which are difficult to replicate or scale, is relevant but only scratches the surface. Conceptually, the EBP approach typically compares an expensive new program to nothing, instead of to alternative uses of resources — in effect assuming that new resources are costless. It emphasizes immediate effects on program participants as the only relevant outcome, ignoring systemic and cultural effects as well as unintended consequences of government interventions. It places a premium on centralization at the expense of individual choice or local problem-solving.

Politics compounds the methodological shortcomings, imposing a peculiar asymmetry in which positive findings are lauded as an endorsement of government intervention while negative findings are dismissed as irrelevant — or as a basis for more aggressive intervention. Policies that reduce government, when considered at all, receive condemnation if they are anything other than totally painless. Throughout, the presence of evidence itself becomes an argument for empowering bureaucrats, as if the primary explanation for prior government failure was a lack of good information.

The common thread in these shortcomings is an implicit endorsement of the progressive view of the federal government as preferred problem-solver and a disregard for the entire range of concerns that prevent conservatives from sharing that view. Like Charlie Brown with his football, conservatives repeatedly lunge with enthusiasm at the idea that evidence will hold government accountable for results, only to be disappointed. Lauded as a tool of technocratic excellence, EBP more often offers a recipe for creeping statism.

Not that there is anything wrong with “creeping statism,” of course!

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