Quantifying Cognitive Factors in Lexical Decline David Francis author Ella Rabinovich author Farhan Samir author David Mortensen author Suzanne Stevenson author 2021 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal francis-etal-2021-quantifying 10.1162/tacl_a_00441 https://aclanthology.org/2021.tacl-1.91/ 2021 9 1529 1545