Book Review: Close Engagements with Artificial Companions: Key Social, Psychological, Ethical, and Design Issues edited by Yorick Wilks Judith Masthoff author 2011-06 text journal article Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal masthoff-2011-book 10.1162/COLI_r_00053 https://aclanthology.org/J11-2006/ 2011-06 37 2