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Updated: Aug 1, 2025

Author Spotlight: Capturing Infant-Caregiver Interactions Through Synchronized Multimodal Data Collection
Published on: May 31, 2024
Observational measures of caregiver's touch behavior in infancy: A systematic review
Juliana F Serra1, Isabel C Lisboa2, Adriana Sampaio3
1Psychology Researcher Centre (CIPsi), School of Psychology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
Insights
This systematic review identifies and classifies observational tools for measuring caregiver touch in infants. It highlights the need for greater consistency in assessing this crucial aspect of early development.
Area of Science:
- Developmental Psychology
- Infant Research
- Social Neuroscience
Background:
- Caregiver touch is vital for infant development.
- Measuring social touch in caregiver-infant interactions is complex.
- No prior systematic reviews have examined observational tools for caregiver touch.
Purpose of the Study:
- To systematically review and classify existing observational instruments for measuring caregiver touch behavior in infants.
- To describe the characteristics of these instruments.
- To identify gaps and inconsistencies in current measurement approaches.
Main Methods:
- Adherence to PRISMA guidelines for systematic review.
- Literature search identifying 3042 publications.
- Selection of 45 studies with observational measures, yielding 12 distinct instruments.
- Classification of instruments based on behavioral, functional, or mixed approaches.
Main Results:
- Twelve observational instruments for caregiver touch were identified.
- Most studies focused on infants under six months.
- Touch was primarily assessed during face-to-face interactions and still-face procedures.
- Instruments were categorized as functional (50%), strictly behavioral (25%), or mixed (25%).
Conclusions:
- Significant heterogeneity exists in conceptualization and operationalization of caregiver touch across instruments.
- Lack of uniformity hinders consistent measurement and comparison across studies.
- Further development is needed to enhance conceptual and operational consistency in touch measurement tools.
Abstract:
The caregiver's touch behavior during early infancy is linked to multiple developmental outcomes. However, social touch remains a challenging construct to operationalize, and although observational tools have been a gold standard for measuring touch in caregiver-infant interactions, no systematic review has been conducted before. We followed the PRISMA guidelines and reviewed the literature to describe and classify the main characteristics of the available observational instruments. Of the 3042 publications found, we selected 45 that included an observational measure, and from those we identified 12 instruments. Most of the studies were of infants younger than six months of age and assessed touch in two laboratory tasks: face-to-face interaction and still-face procedure. We identified three approaches for evaluating the caregiver's touch behavior: strictly behavioral (the observable touch behavior), functional (the functional role of the touch behavior), or mixed (a combination of the previous two). Half of the instruments were classified as functional, 25% as strictly observational, and 25% as mixed. The lack of conceptual and operational uniformity and consistency between instruments is discussed.
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