Future-oriented tweets predict lower county-level HIV prevalence in the United States
Health Psychology (2015) - Comment
pubmed: 26651466  doi: 10.1037/hea0000279  issn: 1930-7810  issn: 0278-6133 

Molly E. Ireland, H. Andrew Schwartz, Qijia Chen, Lyle H. Ungar, Dolores Albarracín