Larry Horn is a longtime member of the American Dialect Society, to whose e-mail list he is a frequent contributor. He has written on personal datives, positive anymore, lexicography, and the role of semantics and pragmatics in the grammar of negation and polarity. His publications include A Natural History of Negation (Chicago, 1989), The Handbook of Pragmatics (Blackwell, 2004), and The Expression of Negation (De Gruyter, 2010). Along with Raffaella Zanuttini, he co-edited the volume Micro-Syntactic Variation in North American English, published in 2014 by Oxford University Press.