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Updated: May 1, 2026

A Within-subjects Experimental Protocol to Assess the Effects of Social Input on Infant EEG
Published on: May 3, 2017
Early interaction between infants and their parents predicts social competence at the age of four
Insights
Early parent-child interactions significantly impact a child's social development. Parental responsiveness to a 9-month-old's communication attempts predicts better peer and social competence by age 4.
Area of Science:
- Developmental Psychology
- Early Childhood Education
- Family Studies
Background:
- Parent-child interaction quality is crucial for social development.
- Early communication skills form the foundation for later social competence.
Purpose of the Study:
- To examine how early parent-child interactions influence social competence at age 4.
- To identify specific interaction patterns that predict later social skills.
Main Methods:
- Longitudinal study of 15 families using Lausanne Trilogue Play.
- Videotaped interactions at 3, 9, 18, and 48 months.
- Assessed peer and social competence at age 4 by preschool teachers.
Main Results:
- Parental responsiveness to infant's early contributions correlated with later social competence.
- Infants initiating turn-taking at 9 months showed enhanced peer and social competence at 48 months.
- Early infant contributions were perceived by parents as intentional communication.
Conclusions:
- Parental engagement in early interactions fosters children's social competence.
- Lausanne Trilogue Play can identify children and families with communication strengths or deficits.
Aim:
To investigate the impact that the interaction between first-born children and their parents, from the age of 3 months, has on peer and social competence when the children are 4 years of age.
Methods:
Fifteen families were videotaped in Lausanne Trilogue Play situations (child-mother-father interactions), when the children were three, nine, 18 and 48 months of age. The findings were then related to peer and social competence assessments carried out by preschool teachers when the children were four.
Results:
There was a correlation between the parents' responsiveness and the child's capacity to initiate (make contributions to) turn-taking sequences in the family triad early in life. This, in turn, was associated with the child's later peer and social competence. At the age of 3 months, the child's contributions to the triadic interaction were interpreted by the parents as intentional communication. According to the preschool teachers' assessments, children who initiated turn-taking sequences at 9 months of age had better peer competence (p = 0.008) and social competence (p = 0.028) at 48 months.
Conclusion:
The results highlight the opportunities that parents have to stimulate their child's later social competence. They also show that a Lausanne Trilogue Play situation can be used to identify competent children and children/families with communication deficits.
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