Unobserved time effects confound the identification of climate change impacts.

Journal Article (Journal Article)

A recent study by Feng et al. [Feng S, Krueger A, Oppenheimer M (2010) Proc Natl Acad Sci USA 107:14257-14262] in PNAS reported statistical evidence of a weather-driven causal effect of crop yields on human migration from Mexico to the United States. We show that this conclusion is based on a different statistical model than the one stated in the paper. When we correct for this mistake, there is no evidence of a causal link.

Full Text

Duke Authors

Cited Authors

  • Auffhammer, M; Vincent, JR

Published Date

  • July 2012

Published In

Volume / Issue

  • 109 / 30

Start / End Page

  • 11973 - 11974

PubMed ID

  • 22783021

Pubmed Central ID

  • PMC3409766

Electronic International Standard Serial Number (EISSN)

  • 1091-6490

International Standard Serial Number (ISSN)

  • 0027-8424

Digital Object Identifier (DOI)

  • 10.1073/pnas.1202049109


  • eng