There is NICE Guidance on Parent training for conduct disorder.

There is a helpful leaflet produced by the Royal College of Psychiatrists, which you can open in a separate browser window Here or see below:

Material in the manual:

The following approaches to intervention are key:

• FamilyWork - with an emphasis on helping parents/carers to uphold BOUNDARIES in firm but benign, and crucially predictable ways.
• MultiFamilyWork
• Working with the Professional Network