Correction for Iliev et al., Linguistic positivity in historical texts reflects dynamic environmental and psychological factors [Correction]

PSYCHOLOGICAL AND COGNITIVE SCIENCES Correction for “Linguistic positivity in historical texts reflects dynamic environmental and psychological factors,” by Rumen Iliev, Joe Hoover, Morteza Dehghani, and Robert Axelrod, which appeared in issue 49, December 6, 2016, of Proc Natl Acad Sci USA (113:E7871–E7879; first published November 21, 2016; 10.1073/pnas.1612058113). The authors...

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