Research and analysis

The Structural Properties of the Extremism Risk Guidelines (ERG22+): a structured formulation tool for extremist offenders

This study explores the structural properties of the ERG22+ formulation tool (Her Majesty’s Prison and Probation Service, 2011) which is used in the management of extremist offenders by the criminal justice system of England and Wales.

Documents

The Structural Properties of the Extremism Risk Guidelines (ERG22+): a structured formulation tool for extremist offenders

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Details

This study explores the structural properties of the ERG22+ formulation tool (Her Majesty’s Prison and Probation Service, 2011).

The formulation tool is made up of 22 factors organised into three domains; Engagement, Intent and Capability. Multidimensional scaling analysis was carried out to identify any potential underlying structures which may inform the development of the tool. The internal consistency reliability of the ERG22+ was examined using Cronbach’s alpha.

Published 12 July 2019