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EBP Compendium: Summary of Systematic Review

National Science Council (Taiwan)
The Effectiveness of Intervention on the Behavior of Individuals With Autism: A Meta-Analysis Using Percentage of Data Points Exceeding the Median of Baseline Phase (PEM)

Ma, H. H. (2009).
Behavior Modification, 33(3), 339-359.

Indicators of Review Quality:

The review addresses a clearly focused question No
Criteria for inclusion of studies are provided No
Search strategy is described in sufficient detail for replication No
Included studies are assessed for study quality No
Quality assessments are reproducible No

Description: This is a review of studies investigating the effectiveness of several components of behavior modification interventions for individuals with autism.

Question(s) Addressed:

Question not specifically stated.

Population: Individuals with autism.

Intervention/Assessment: Interventions targeting behavior improvement.

Number of Studies Included: 163

Years Included: Not stated.



  • Treatment
    • Cognition-Language
      • Applied Behavioral Analysis/Discrete Trial Training
        • “The five highly effective (mean effect size >.9) intervention strategies were priming, self-control, training, positive reinforcement for desirable behavior plus punishment for undesirable behavior, and presenting preferential activities or reinforcers. Dependent variables, of which the mean effect sizes were >.9 were social interactions, language abilities, and attention” (p. 357).

Keywords: Autism Spectrum Disorders, Behavioral Treatments

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Added to Compendium: March 2012

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