Manuscript Details

Source

Zajac, L., Raby, K. L., & Dozier, M. (2019). Sustained effects on attachment security in middle childhood: Results from a randomized clinical trial of the Attachment and Biobehavioral Catch‐up (ABC) intervention. Journal of Child Psychology and Psychiatry, 61(4), 417–424. https://doi:10.1111/jcpp.13146

Rating
Moderate
Author Affiliation

Mary Dozier, one of the authors of the study, is a developer of the ABC home visiting program model.

Funding Sources

This research was supported by Award Numbers R01MH074374 and R01MH084135 from the National Institute of Mental Health.

Study Design

Design Attrition Baseline equivalence Confounding factors Valid, reliable measures?
Randomized controlled trial High Established on race/ethnicity and SES; outcome not feasible to assess at baseline None
Notes

This manuscript analyzes findings from the same randomized controlled trial as Bernard et al. (2012), and additional contextual information about the study is from this source. Information to establish baseline equivalence of the groups on socioeconomic status was based on correspondence with the author.

Study Participants

This randomized controlled trial (RCT) assigned parents to either ABC-Infant or a comparison home visiting program. Eligible families were those referred to Child Protective Services for risk of child maltreatment. At enrollment, children were younger than 2 years old. The follow-up was conducted when children were about 9 years old. The sample at follow-up included 100 children (44 in the ABC-Infant group and 56 in the comparison group). Characteristics of the ABC-Infant group (comparison group in parentheses) were as follows: 71 (68) percent of children were African American, 2 (13) percent were Caucasian, 21 (13) percent were biracial, 6 (6) percent were another race, and 21 (23) percent were Hispanic. Household income was less than $10,000 for 57 (66) percent of study families.

Setting

The study was conducted in a large mid-Atlantic city.

Home Visiting Services

ABC-Infant, a brief parenting intervention consisting of 10 sessions each an hour long, occurred weekly in participants’ homes. Parent coaches conducted the sessions and provided parents with real-time feedback using videos of the sessions to highlight parenting strengths and weaknesses. The coaches also engaged parents in structured activities with their children and incorporated research findings in the information provided to the parents. The sessions focused on five topic areas: providing nurturance and interpreting child signals, responding in sensitive ways and delighting in the child, refraining from frightening behavior, identifying the parent’s personal challenges that may hinder nurturing parenting behavior, and consolidating the information and skills that parents learned.

Comparison Conditions

Comparison families received Developmental Education for Families (DEF) in home visits that were the same duration (10 hour-long sessions) and frequency (weekly) as ABC-Infant. DEF was designed to enhance cognitive and linguistic development. For this study, the components related to promoting parental sensitivity or responsiveness were removed to distinguish it from ABC-Infant.

Were any subgroups examined?
No

Findings that rate moderate or high in this manuscript

Child development and school readiness
Outcome measure Timing of follow-up Rating Direction of Effect Effect size Stastical significance Sample size Sample description

Kerns Security Scale - Attachment security

Age 9

Moderate
0.46

Statistically significant, p= 0.02

100 children

ABC-Infant vs. DEF; Large mid-Atlantic city

Kerns Security Scale - Attachment security

Age 9

Moderate
0.48

Statistically significant, p= 0.02

100 children

ABC-Infant vs. DEF; Large mid-Atlantic city

Effect rating key
Favorable finding / Statistically significant
UnFavorable finding / Statistically significant
Ambiguous finding / Statistically significant
No effect / Not statistically significant

This study included participants with the following characteristics at enrollment:

Race/Ethnicity

The race and ethnicity categories may sum to more than 100 percent if Hispanic ethnicity was reported separately or respondents could select two or more race or ethnicity categories.

Black or African American
69.00%
Hispanic or Latino
22.00%
White
8.00%
Some other race
6.00%
Two or more races
17.00%

Maternal Education

Data not available

Other Characteristics

Data not available