In a stunningly obtuse piece of mismanagement, the same psychologists the CIA had contracted to engage in the torture were also assessing their own effectiveness, as detailed on page 473:
The CIA Inspector General Special Review states that CIA ‘psychologists objected to the use of on-site psychologists as interrogators and raised conflict of interest and ethical concerns.’ According to the Special Review, this was ‘based on a concern that the on-site psychologists who were administering the [CIA’s enhanced interrogation techniques] participated in the evaluations, assessing the effectiveness and impact of the [CIA’s enhanced interrogation techniques] on the detainees. In January 2003, CIA Headquarters requested that at least one other psychologist be present who was not physically participating in the administration of the CIA’s enhanced interrogation techniques. According to [Redacted] OMS, however, the problem still existed because ‘psychologist/interrogators continue to perform both functions.’
The situation being described would be insane even if you took torture out of the picture – the CIA was apparently contracting work out to a private company, then asking that company to evaluate its own performance. You might as well ask students to grade their own exams. And someone who just tortured a suspect is hardly going to write a report the next day concluding, “oh wait, actually, I probably didn’t need to do that. YOLO!” From the moment this “scientific” programme was set up, it was destined to degenerate into a cycle of torture, post-hoc justification, and more torture.