Talk:Kishou Arima/@comment-26190399-20150920203225/@comment-25047329-20150920204907

I reckon through psychological and neurological tests. Arima gave him really bad brain damage, so they must've examined him back, forth, inside and out. The CCG in general tries to keep tabs on their investigator's psychological states to try and get the most out of them. Like, Matsuri somehow knew about Urie's need to prove himself and used him to locate Big Madam. The CCG has a scary amount of insight into their employees minds sometimes.