RT Article T1 ISSP. An experiment in multi-systemic responses to persistent young offenders known to children's services JF The British journal of criminology VO 44 IS 2 SP 225 OP 240 A2 Bullock, Roger A2 Van der Laan, Peter LA English YR 2004 UL https://krimdok.uni-tuebingen.de/Record/1639316833 AB ISSP is a multi-systemic intervention for persistent young offenders delivered jointly by police, social services and education. Based on a Netherlands programme, a variation of the approach has been widely adopted in England and Wales. The intervention has seven components including close supervision by police, family group conferences, multi-agency reviews and opportunities for reparation and mentoring. To qualify, young people need at least three convictions or cautions, to be aged 15-17 and to have experienced custody or a failed community sentence. Candidates were randomly allocated to either ISSP or two control groups. As hypothesized, reconviction rates were unaffected by the intervention but there was a 30 to 50 per cent reduction in the volume of crime committed by ISSP participants. No particular aspect of the programme was associated with success suggesting a general placebo effect. Lessons for the planning and administration of such projects and the need for improved epidemiological data about persistent offenders are indicated K1 Chronische Straftäter K1 Frühkriminalität K1 Polizeiliche Überwachung K1 Wiedergutmachung K1 Jugendkriminalität K1 Intervention K1 Family Group Conferencing DO 10.1093/bjc/44.2.225