The other day, I asked "Why would someone undermine their professional reputation defending Romney's indefensible economic policies?" Simon Wren-Lewis is less worried about their individual reputations than the reputation of the profession as a whole:
Giving Economics a Bad Name, by Simon Wren-Lewis: Greg Mankiw is known to every economist and economics student, if only because of his best selling textbook. John Taylor is known to every macroeconomist, if only because of the large number of bits of macro with his name on it (Taylor rule, Taylor contracts etc). Both are respected by other academics because of the quality and influence of their academic work.
With two others, they recently wrote this about the Obama administration’s attempts to stimulate the economy through fiscal policy after the recession: “The negative effect of the administration’s ‘stimulus’ policies has been documented in a number of empirical studies.” They then quote from two studies. ... No other studies are directly referred to. That might just be because the overwhelming majority suggest that the stimulus package worked. ... Which is not too surprising, as it is what Mankiw’s textbook suggests, and it is what the New Keynesian theory both authors have contributed to suggests.
Now the quote comes from a paper prepared for the Romney presidential campaign. It is clearly political in tone and intent. As both academics are Republican supporters, it may therefore seem par for the course. But it should not be. The Romney campaign publicised this paper because it was written by academics – experts in their field. It allows those who oppose fiscal stimulus to continue to claim that the evidence is on their side – look, these distinguished academics say so.
It is one thing for economists to disagree about policy. It would also be fine to say I know the evidence is mixed, but I think some evidence is more reliable. It is not fine to imply that the evidence points in one direction when it points in the other ...
This is sad, because it tells us as much about economics as an academic discipline as it does about the individuals concerned. In the past I have imagined something similar happening in physics..., if it did, the academics concerned would immediately lose their academic reputation. ... Responding to evidence rather than ignoring it is what distinguishes real science from pseudo science, and doctors from snake oil salesmen.
What can economics as a discipline do about this sad state of affairs? The answer is pretty obvious, to economists in particular, and that is changing the incentives where we can. However we cannot do much about the incentives provided by politics and the media. I have been pretty pessimistic about this in the past, but in a future post I will try and be more positive and talk about one possible way forward.