Klein Velderman, M., Bakermans-Kranenburg, M. J., Juffer, F., & van IJzendoorn, M. H. (2006). Effects of attachment-based interventions on maternal sensitivity and infant attachment: Differential susceptibility of highly reactive infants. Journal of Family Psychology, 20(2), 266-274.
| Screening decision | Screening conclusion | HomVEE procedures and standards version |
|---|---|---|
| Passes screens | Eligible for review | Version 2 |
| Rating | Design | Attrition | Baseline equivalence | Compromised randomization | Confounding factors | Valid, reliable measure(s) |
|---|---|---|---|---|---|---|
| High | Randomized controlled trial | Low | Not assessed for randomized controlled trials with low attrition |
No | No |
Yes, details reported below for findings on valid, reliable outcomes that otherwise rate at least moderate |
The manuscript reports findings separately for a subset of the intervention group that was randomly assigned to receive video feedback and brochures to enhance sensitive parenting (referred to in the manuscript as the “VIPP group”) and another subset of the intervention group that in addition to the video feedback and brochures was randomly assigned to participate in discussions about the mother’s childhood attachment experiences in relation to their current parenting style (referred to in the manuscript as the “VIPP-R group”). The developers indicated the VIPP and VIPP-R groups received the same intervention. Therefore, this review focused on the findings for the intervention group that received the VIPP home visiting model (which combines the VIPP and VIPP-R subsets). Information about maternal sensitivity findings at 11 and 13 months old was based on correspondence with the authors.
| Study participants | Study participants included first-time mothers with 4-month-old children; these participants were identified through administrative records in one city and five villages in the Netherlands. The study recruited women with low educational levels, defined as more than eight but fewer than 14 years of schooling. Using the Adult Attachment Interview to screen mothers, the study team selected mothers classified as having an insecure attachment style for the study. The study randomly assigned mothers to one of three groups: the Video-feedback Intervention to promote Positive Parenting (VIPP) intervention group (28 mothers), the VIPP-R (VIPP with a representational focus) intervention group (26 mothers), or the business-as-usual comparison group (27 mothers). The full intervention sample included both VIPP and VIPP-R. The analytic sample size included 54 participants in the intervention group and 27 participants in the comparison group. Maternal sensitivity was measured when the infants were 11 months old (about one month after the intervention ended) and again when the infants were about 13 months old (about three months after the intervention ended). At enrollment, the mean age of mothers was 27.8. |
|---|---|
| Setting | The study took place in West Netherlands. |
| Intervention services | VIPP consisted of one preliminary home visit, followed by four subsequent home visits when infants were 7 to 10 months old. Each visit took place at the mother and child’s home and typically lasted 90 minutes. During home visits, home visitors recorded video observations of the mother–infant pair to assess the mother’s sensitive responsiveness during free play or other activities with the child. The home visitor then provided feedback based on the prior session’s video, selecting specific episodes to bring to the mother’s attention and preparing feedback on a specific theme such as the child’s contact-seeking and exploration behavior. Home visitors also provided brochures about sensitive parenting. Mothers in the VIPP-R group participated in additional discussions about their attachment experiences. |
| Comparison conditions | Families assigned to the comparison condition were not eligible to receive intervention services through VIPP. The sole purpose of home visits during the study was for data collection purposes. |
| Subgroups examined |
This field lists subgroups examined in the manuscript (even if they were not replicated in other samples and not reported on the summary page for this model’s report). There were no subgroups reported in this manuscript. |
| Funding sources | The study was supported by a Pioneer Award of the Netherlands Organization for Scientific Research NWO (Grant PGS 59-256) and the NWO/SPINOZA Prize. |
| Author affiliation | Authors were affiliated with Leiden University in the Netherlands, which sponsors the VIPP home visiting program. |
| Peer reviewed | Yes |
Clinicaltrials.gov Identifier: None found. SocialScienceRegistry.org Identifier: None found. Registry of Efficacy and Effectiveness Studies Identifier: None found. Study registration was assessed by HomVEE for Clinicaltrials.gov beginning with the 2014 review, and for other registries beginning with the 2021 review.
Findings that rate moderate or high
| Rating | Outcome measure | Effect | Sample | Timing of follow-up | Sample size | Intervention group | Comparison group | Group difference | Effect size | Statistical significance | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| High | Children's attachment security |
FavorableUnfavorable or ambiguousNo Effect |
VIPP vs. comparison, Netherlands, full sample |
13 months old |
81 infants | Not reported | Not reported | Not reported | Study reported = 0.10 | Not statistically significant, p = 0.67 |
Statistical significance is based on HomVEE calculations. Authors' reported effect size is Cohen's d |
| High | Children's attachment security: Secure attachment |
FavorableUnfavorable or ambiguousNo Effect |
VIPP vs. comparison, Netherlands, full sample |
13 months old |
81 infants | Unadjusted proportion = 0.67 | Unadjusted proportion = 0.56 | Mean difference = 0.11 | Study reported = 0.22 | Not statistically significant, p= 0.17 |
Authors' reported effect size is Cohen's d |
| Rating | Outcome measure | Effect | Sample | Timing of follow-up | Sample size | Intervention group | Comparison group | Group difference | Effect size | Statistical significance | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| High | Ainsworth Maternal Sensitivity Scale |
FavorableUnfavorable or ambiguousNo Effect |
VIPP vs. comparison, Netherlands, full sample |
13 months old |
81 mothers | Unadjusted mean = 6.03 | Unadjusted mean = 5.27 | Mean difference = 0.76 | HomVEE calculated = 0.46 | Not statistically significant, p= 0.054 |
|
| High | Ainsworth Maternal Sensitivity Scale |
FavorableUnfavorable or ambiguousNo Effect |
VIPP vs. comparison, Netherlands, full sample |
11 months old |
81 mothers | Unadjusted mean = 5.35 | Unadjusted mean = 4.81 | Mean difference = 0.54 | HomVEE calculated = 0.53 | Statistically significant, p= 0.03 |