<prompt> Translate the following text to EnglishKwa kuathiriwa na utafiti wa mtaalamu wa kisaikolojia Bruno Bettelheim unaoonyesha kwamba kambi za mateso za Nazi ziliwatendea wafungwa wao kama watoto, Elkins alisisitiza kwamba mfumo wa utumwa ulikuwa mkali sana na wenye kufunika kila kitu hivi kwamba hakuna mtu isipokuwa mwenye moyo mgumu zaidi angeweza kuishi bila mapenzi yao kuvunjwa au akili zao kuharibiwa.  <response>: Influenced by the psychoanalyst Bruno Bettelheims research showing that the Nazi concentration camps infantilized their inmates, Elkins argued that the closed system of slavery was so cruel and all-encompassing that none but the most stouthearted could survive without their wills being broken or their psyches damaged. 