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The Webster–Stratton “Incredible Years” parent training programme reduces conduct problems in children

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Q Does a parenting intervention delivered by a community voluntary organisation reduce conduct problems in children?


Embedded ImageDesign:

Randomised controlled trial.

Embedded ImageAllocation:


Embedded ImageBlinding:

Single blind (assessors blinded).

Embedded ImageFollow-up period:

Six months (includes 3.5 month treatment period).

Embedded ImageSetting:

Five urban community sites in one county in England; time period not stated.

Embedded ImagePatients:

Seventy six children (aged 2–9 years) with clinical conduct problems (Eyberg problem scale). Exclusion criteria: parental drug addiction; child in foster care or severely disabled.

Embedded ImageIntervention:

Webster–Stratton “Incredible Years” (see parent training intervention (weekly 2-hour sessions for 14 weeks) or wait-list control. The intervention was delivered in groups of …

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  • For correspondence: Francis Gardner, Centre for Evidence-Based Intervention, Department of Social Policy & Social Work, Oxford University, 32 Wellington Square, Oxford OX1 2ER, UK; francis.gardner{at}

  • Source of funding: Esmee Fairbairn Foundation.


  • Competing interests: None declared.

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