Origin of Guantanamo Bay Torture Techniques

Here is a NY Times article identifying the source of the torture techniques taught and used at Guantanamo Bay on the detainees:

The military trainers who came to Guantánamo Bay in December 2002 based an entire interrogation class on a chart showing the effects of “coercive management techniques” for possible use on prisoners, including “sleep deprivation,” “prolonged constraint,” and “exposure.”

What the trainers did not say, and may not have known, was that their chart had been copied verbatim from a 1957 Air Force study of Chinese Communist techniques used during the Korean War to obtain confessions, many of them false, from American prisoners. ...

The only change made in the chart presented at Guantánamo was to drop its original title: “Communist Coercive Methods for Eliciting Individual Compliance.”