Benhabib, Jess. <br/><br/>
Externalities and Growth Accounting / 
Jess Benhabib, Boyan Jovanovic. 
 - Cambridge, Mass.  National Bureau of Economic Research  1989. 
 - 1 online resource:  illustrations (black and white); 
 - NBER working paper series  no. w3190 .
 - Working Paper Series (National Bureau of Economic Research)  no. w3190. .
<br/><br/> December 1989. 
<br/><br/> We reexamine several bodies of data on the growth of output, labor, and capital, within the context of a model that admits the possibility of an externality to the capital input. The model is an augmented version of Paul Romer's (1987) reformulation of the Solow model. Unlike Romer, however, we find no evidence of an externality to capital. This finding implies nothing about the size of possible spillovers in the creation of  knowledge because in our model, causality runs exclusively from knowledge to capital. 
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