Sigma Convergence versus Beta Convergence: Evidence from U.S. County-Level Data
نویسندگان
چکیده
In this paper, we outline (i) why σ -convergence may not accompany β-convergence, (ii) discuss evidence of β-convergence in the United States, and (iii) use U.S. county-level data containing over 3,000 cross-sectional observations to demonstrate that σ -convergence cannot be detected at the county level across the United States, or within the large majority of the individual U.S. states considered separately. Indeed, in many cases statistically significant σ -divergence is found.
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