= Joe Jackson
{disambiguate=language evolution researcher}
{c}
<Joe Jackson (language evolution researcher)> coauthored the 2007 quantitative study of English irregular-verb regularization. Its byline identifies the author with Harvard's Program for Evolutionary Dynamics.<Quantifying the evolutionary dynamics of language by Erez Lieberman and others>[Byline and affiliations]{ref}
The authors tracked a historical cohort of irregular verbs and related survival of irregular forms to <word frequency>. This illustrates <survival analysis> applied to cultural transmission: the object being lost is a linguistic form. The estimated regularization rate describes an aggregate pattern, without implying that all low-frequency verbs change together.<Quantifying the evolutionary dynamics of language by Erez Lieberman and others>[Methods Summary and Figures 1–2]{ref}
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