Psychlogical Theories of the Cycle
As long ago as 2003 , in response to some Austrians whom I saw mocking "psychological" takes on the business cycle, I was stressing that there is no reason to view structural or monetary theories and psychological theories as rivals: they can complement each other, as Roger and I argued in the paper linked to above. But, once again, Gottfried Haberler beat me there: "But the distinction between the writers who give prominence to these 'psychological' factors and the writers so far reviewed is, taken as a whole, a distinction of emphasis rather than of kind. The 'psychological' factors are put forward as supplemental to the monetary and other economic factors and not as alternative elements of causation, while on the other hand they are in no sense overlooked by the writers of the other group, or most of them, though they may be assigned a less prominent place in the chain of causation." -- Prosperity and Depression , p. 150