Many inmates 'have very low IQs' / BBC, 15 Feb 2007
http://news.bbc.co.uk/1/hi/education/6364809.stm
"Almost 6,000 people with IQs below 70 are estimated to be in UK prisons at any one time - many of them with learning disabilities, a report says."


HMP Liverpool, Styal and Hindley Study Report / University of Liverpoool, 22 Jan 2007
PDF - http://www.prisonreformtrust.org.uk/temp/StudyspReport2.pdf
Dr P G Mottram