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Attachment and Biobehavioral Catch-up

Child Welfare
  Literature review updated November 2017.
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Attachment and Biobehavioral Catch-up (ABC) is a manualized home visiting program for maltreated children, typically between 6 and 24 months old, and their caregivers. ABC aims to teach caregivers to reinterpret avoidant or resistant child behavior and respond in nurturing ways. Parent coaches provide ten weekly home visits of approximately 60 minutes. In the included study, licensed therapists provided ABC to caregivers of foster children younger than six who were diagnosed with attachment-related problems.
 
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META-ANALYSIS
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Meta-analysis is a statistical method to combine the results from separate studies on a program, policy, or topic in order to estimate its effect on an outcome. WSIPP systematically evaluates all credible evaluations we can locate on each topic. The outcomes measured are the types of program impacts that were measured in the research literature (for example, crime or educational attainment). Treatment N represents the total number of individuals or units in the treatment group across the included studies.

An effect size (ES) is a standard metric that summarizes the degree to which a program or policy affects a measured outcome. If the effect size is positive, the outcome increases. If the effect size is negative, the outcome decreases. See Estimating Program Effects Using Effect Sizes for additional information.

Adjusted effect sizes are used to calculate the benefits from our benefit cost model. WSIPP may adjust effect sizes based on methodological characteristics of the study. For example, we may adjust effect sizes when a study has a weak research design or when the program developer is involved in the research. The magnitude of these adjustments varies depending on the topic area.

WSIPP may also adjust the second ES measurement. Research shows the magnitude of some effect sizes decrease over time. For those effect sizes, we estimate outcome-based adjustments which we apply between the first time ES is estimated and the second time ES is estimated. We also report the unadjusted effect size to show the effect sizes before any adjustments have been made. More details about these adjustments can be found in our Technical Documentation.

Meta-Analysis of Program Effects
Outcomes measured No. of effect sizes Treatment N Adjusted effect size(ES) and standard error(SE) Unadjusted effect size (random effects model)
ES SE Age ES p-value
Internalizing symptoms
Symptoms of internalizing behavior (e.g., sadness, anxiety, or withdrawal) measured on a validated scale.
 4 1 29 -0.475 0.266 4 -1.284 0.001

Citations Used in the Meta-Analysis

Sprang, G. (2009). The efficacy of a relational treatment for maltreated children and their families. Child and Adolescent Mental Health, 14(2), 81-88.