Related Experiment Video
Updated: Aug 9, 2026

Multi-Modal Home Sleep Monitoring in Older Adults
Published on: January 26, 2019
Cosleeping in a community sample of 2- and 3-year-old children
1Department of Pediatrics, University of Massachusetts Medical School, Worcester 01655.
Insights
Co-sleeping, where a child shares a bed with parents, is common in toddlers. Frequent co-sleeping is linked to persistent child sleep problems but not general behavioral issues.
Area of Science:
- Pediatrics
- Developmental Psychology
- Sleep Medicine
Background:
- Co-sleeping is a prevalent practice among families with young children.
- Understanding the relationship between co-sleeping and child well-being is crucial for parental guidance.
Purpose of the Study:
- To investigate the prevalence of co-sleeping in toddlers (2-3 years old).
- To examine the association between co-sleeping and child behavior problems.
- To explore the link between frequent co-sleeping and specific child sleep issues.
Main Methods:
- A community sample of 303 parents of 2- and 3-year-olds were interviewed.
- Parents completed the Child Behavior Checklist for Ages 2-3.
- Child sleep behaviors, including co-sleeping frequency, were assessed.
Main Results:
- 55% of parents reported occasional co-sleeping.
- Frequent co-sleeping was more common in nonwhite and single-mother households.
- Co-sleeping was not linked to general behavior problems, but frequent co-sleepers reported more sleep difficulties.
- Persistent frequent co-sleeping correlated with ongoing sleep problems.
Conclusions:
- Co-sleeping is a common toddler practice and not indicative of general maladjustment.
- Frequent co-sleeping is closely associated with significant child sleep problems.
- Interventions targeting sleep problems may need to consider co-sleeping habits.
Abstract:
A randomly selected community sample of 303 parents of 2- and 3-year-olds were interviewed about child sleep behaviors and completed the Child Behavior Checklist for Ages 2-3, a standardized rating scale for child problem behaviors. Most parents (55%) reported that the child slept in their bed at least occasionally and for at least part of the night, particularly during periods of minor stress or disruption of the family routine. The prevalence of cosleeping did not vary by the child's age or sex, but frequent cosleeping (more than once per week) was more common among nonwhite families and single-mother households. Cosleeping was not significantly related to child behavior problems, but frequent cosleepers were more likely to report sleep problems, including difficulty getting to sleep and night waking. Children who were still cosleeping frequently 1 year after the initial assessment maintained high levels of sleep problems, compared with those who stopped cosleeping and non-cosleepers. Cosleeping is common at this age and is not related to general maladjustment. However, frequent cosleeping is closely intertwined with child sleep problems.
Related Concept Videos
Naturalistic Observations
Stages of Sleep
Before sleep begins, in wakefulness, the brain exhibits primarily beta waves, which are high in frequency and low in amplitude, indicating alertness...
REM Sleep Behavior Disorder
RBD is significantly associated with...
Socioemotional Development during Infancy
Primary Temperament Types
Stella Chess...
Parenting Styles
Authoritarian Parenting
This style is strict and controlling, with little room for open dialogue. Authoritarian parents demand obedience and often enforce rules with minimal warmth. Children raised this way may lack social skills and initiative, usually comparing themselves to others unfavorably.
Authoritative Parenting
This...
Relationship with Other Adult Family Members and Siblings

