Preventing Torture An Operational Guide for National Human Rights Institutions Key points: Chapter 4 • Internal consistency of a testimony is an important element that can support allegations of torture. Other corroborating information should also be sought. • Medical documentation, as well physical or psychological signs of torture, can provide further evidence of torture. • Formally recording the evidence gathered is crucial. Further reading In the CD-Rom National Human Rights Institutions: Handbook on the Establishment and Strengthening of National Institutions for the Promotion and Protection of Human Rights, Professional Training Series No. 4; OHCHR; 1995 Training Manual on Human Rights Monitoring; Professional Training Series No. 7; OHCHR; 2001 Istanbul Protocol: Manual on the Effective Investigation and Documentation of Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment; Professional Training Series No. 8; OHCHR; 2001 The Torture Reporting Handbook, Camille Giffard, Human Rights Centre, University of Essex; 2000 42 | Chapter 4: Investigating allegations of torture