Purity homophily in social networks
Journal of Experimental Psychology General (2016) - Comment
pubmed: 26726910  doi: 10.1037/xge0000139  issn: 1939-2222  issn: 0096-3445 

Morteza Dehghani, Kate Johnson, Joe Hoover, Eyal Sagi, Justin Garten, Niki Jitendra Parmar, Stephen Vaisey, Rumen Iliev, Jesse Graham