Zimbardo (1973) had intended that the experiment should run for a fortnight, but on the sixth day it was terminated. Christina Maslach, a recent Stanford Ph.D. brought in to conduct interviews with the guards and prisoners, strongly objected when she saw the prisoners being abused by the guards.
After a year in the role, Engen announced his exit from The Young and the Restless because of objections over his storyline, and Michael Muhney was recast in the role. Controversy arose two weeks after Muhney's debut when Adam seduced male character Rafe Torres (Yani Gellman).
Kyle Jenkins Abbott (born Christian Victor Newman) is a character on The Young and the Restless, last portrayed by Lachlan Buchanan 2015-2016. He has previously been played by Blake Hood from 2012-2013 and Hartley Sawyer from 2013-2014. Garrett Ryan played a younger Kyle from 2010-2012.