Schroeder, J., & Epley, N. (2016). Mistaking minds and machines: How speech affects dehumanization and anthropomorphism. Journal of Experimental Psychology: General, 145, 1427-1437. [APA PsycNet Link]
Short Summary: This paper shows that hearing a human speech (compared with reading the same words in text or watching a human communicator with subtitles) makes evaluators more likely to believe a script was created by a human (vs. computer) regardless of whether it actually was created by a human (4 experiments).