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Model Programs Database

Preventive Treatment Program

University of Montreal
3050 Edouard Monpetit
Montreal, Quebec, QC H3T 1J7

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Contact Information:
Richard E. Tremblay, PhD

Program Specification:






Moderate Evidence of Effectiveness

Age/Grade Level:

Target Settings:

Target Groups:





Other Participation Criteria:


Canadian born


The Preventive Treatment Program (also known as the Montreal Longitudinal Experimental Study) is a multi-component program designed to prevent antisocial behavior of boys who display early, problem behavior. It provides training for both parents and youth to decrease delinquency, substance use, and gang involvement. Parent training is targeted at improving parental behavior (e.g. improve monitoring and positive reinforcement; teach effective, nonpunitive discipline; improve coping with crisis); and child social skills training in order to reduce aggressive behavior in the children.

Program Descriptors Include:
Behavior Management/Discipline, Bullying/Violence, Family/Parental Involvement, Mentoring/Tutoring, Substance Abuse, Life Skills Training

Starting Date: Unspecified
Students Served Per Year: Unspecified
Last Verified: 2009

Risk Factors:

Protective Factors:

Program addresses the following:

Individual factors

  • Has a learning disability or emotional disturbance
  • High-risk peer group
  • High-risk social behavior
  • Retention/overage for grade
  • Misbehavior
  • Early aggression

Family factors

  • Low socioeconomic status
  • Low education level of parents

Program promotes the following:


  • Opportunities and rewards for pro-social involvement
  • Clear social norms
  • Good relationships with parents, peers, and teachers
  • Involvement with positive peer activities


  • Healthy/conventional beliefs and standards

Program Resources:

Annual Cost:


Funding Sources Include:

Program Staff Includes:



Materials Used:

Supporting / Partner Organizations:



Evaluation Information:

There were no program effects until one year after the intervention and changes were not evident until three years post-intervention and became increasingly significant over time. At age 12, three years after the intervention, treated boys compared to untreated boys were: less likely to report trespassing or theft, rated by teachers as fighting less, less likely to be held back in school, less likely to be placed in special education classes, and less likely to have highly aggressive best friends. At age 15, those receiving the intervention were less likely than untreated boys to report: ? Gang involvement ? Having been drunk or taken drugs in the past 12 months ? Committing delinquent acts (stealing, vandalism, drug use) ? Having friends arrested by the police

How evaluation data was collected:
Data collected and analyzed at state or organizational level

National Dropout Prevention Center for Students with Disabilities
209 Martin Street
Clemson, SC 29631-1555
Toll Free: 866-745-5641
TDD: 866-212-2775
Fax: 864-656-0136
Email: NDPCSD-L@clemson.edu

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Last Updated: May 30, 2015