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Effect of the INSIGHT Firstborn Parenting Intervention on Secondborn Sleep
Emily E Hohman1, Jennifer S Savage1,2, Michele E Marini1
1Center for Childhood Obesity Research.
Pediatrics
|June 15, 2022
Summary
The Intervention Nurses Start Infants Growing on Healthy Trajectories (INSIGHT) responsive parenting intervention positively impacted secondborn infant sleep, showing longer sleep duration and improved self-soothing behaviors. This suggests that early parenting interventions benefit all children within a family.
Area of Science:
- Pediatrics
- Developmental Psychology
- Public Health
Background:
- The INSIGHT responsive parenting (RP) intervention improved sleep in firstborn infants.
- This study investigated if the INSIGHT RP intervention had spillover effects on secondborn siblings.
Purpose of the Study:
- To test intervention spillover effects on secondborn siblings.
- To examine birth order differences in infant sleep.
Main Methods:
- Secondborn infants (n=117) of INSIGHT mothers were enrolled in the SIBSIGHT observational cohort.
- Infant sleep was assessed using the Brief Infant Sleep Questionnaire at 3, 16, and 52 weeks.
- Generalized linear mixed models analyzed differences by firstborn randomization and birth order.
Main Results:
- Secondborns of mothers in the RP group slept longer nightly (42 min) and total (53 min) compared to control secondborns.
- RP group secondborns showed increased self-soothing (OR=2.0) and earlier bedtimes (OR=2.9-4.7).
- Secondborns slept longer than firstborns at 16 weeks (37 min).
Conclusions:
- The INSIGHT RP intervention demonstrated a positive spillover effect on secondborn infant sleep duration and behaviors.
- Parenting interventions for first-time mothers can benefit subsequent children.
- The findings highlight the long-term impact of early parenting support on child development.
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