claim: The Stanford prison experiment was an examination of the causes of troubles between guards and prisoners.
evidence: Hard Times on Easy Street is a 1987 album by country singer David Lynn Jones .. David Lynn Jones. David Lynn Jones. country. country music. It was his first release .. Willie Nelson 's version of `` Living in the Promiseland '' was a number one hit in 1986 .. Willie Nelson. Willie Nelson. Living in the Promiseland. Living in the Promiseland. `` High Ridin ' Heroes '' is a duet with Waylon Jennings .. Waylon Jennings. Waylon Jennings. The album produced four singles  : `` Bonnie Jean -LRB- Little Sister -RRB- '' , `` High Ridin ' Heroes '' , `` The Rogue '' , and `` Tonight in America '' .