Resources

The science of connection, explained for families.

What researchers have known for decades, now available to every parent. Explore the science, watch the series, and download guides built on nearly five decades of peer-reviewed research.

Mother connecting with newborn
05
Years when emotional connection has its most profound and lasting impact on development
47yrs
Of peer-reviewed research behind the science powering the Connection Checkup
400K
Babies born preterm each year in the U.S. for whom early connection has immediate, measurable biological impact
New
Vital Sign
The American Academy of Pediatrics is calling for a major shift in pediatric care, with a new emphasis on relational health
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Anchor Series

The Science of Emotional Connection

The foundation. What connection actually is, why it matters more than any parenting technique, and what the research shows about how it shapes your child's brain, heart, and nervous system from birth.

Mother and child laughing together
The Science of
Emotional Connection
4-part series · Powered by WECS research
This series draws directly from nearly five decades of peer-reviewed research by Dr. Martha G. Welch and colleagues, including publications in Science Translational Medicine and Frontiers in Psychology.
From the Research
Connection is not a nice-to-have layered on top of good parenting. Connection is the mechanism. Everything else runs on top of it.
Reflected across the body of work of Dr. Martha G. Welch, Columbia University Medical Center
Safety is not the absence of threat. It is the presence of connection. The nervous system responds to relationship before it responds to reason.
Stephen Porges, Polyvagal Theory · University of North Carolina
The program improved emotional connection and behavior regulation in both the home and the classroom, with effects sustained at follow-up.
Welch et al., Randomized Controlled Trial · Frontiers in Child & Adolescent Psychiatry, 2024
A Convergence of Science

Decades of independent research, pointing in the same direction

The science behind OurConnect does not rest on a single researcher or institution. It draws on a broad body of converging work from across developmental psychology, neuroscience, and pediatric medicine.

The Biology of Bonding
"Oxytocin acts to allow the high levels of social sensitivity and attunement necessary for human sociality and for rearing a human child."
C. Sue Carter's pioneering research established the role of oxytocin in forming and sustaining social bonds. Her work revealed that connection has a hormone, and that the biological systems supporting parent-child bonding are deeply intertwined with the autonomic nervous system, cardiovascular health, and long-term development.
C. Sue Carter, PhD · Indiana University & University of Virginia
Mutual Regulation
"Infants are active participants in their own development, not passive recipients of caregiving."
Ed Tronick's Still Face Experiment revealed how profoundly infants are affected by a caregiver's emotional withdrawal, even briefly. His mutual regulation model established that connection is a two-way biological exchange from the earliest days of life, not a one-directional act of caregiving.
Ed Tronick · Harvard Medical School
Polyvagal Theory
"Safety is not the absence of threat. It is the presence of connection."
Stephen Porges identified the vagus nerve as the physiological pathway through which social connection regulates our autonomic nervous system. His Polyvagal Theory explains why a calm, present caregiver can literally settle a distressed child's body, and why relational safety is a prerequisite for learning and development.
Stephen Porges · University of North Carolina

The Welch Emotional Connection Screen builds on this converging body of work, from Carter's oxytocin research to Tronick's mutual regulation model to Porges' Polyvagal Theory, adding a validated observational tool that makes the quality of parent-child connection measurable for the first time. OurConnect brings these decades of research together into a single platform designed for families.

The Biology of Connection

Your calm doesn't just comfort your child. Through the vagus nerve, it literally regulates their heartbeat and nervous system.

Emotional connection is not a psychological concept alone. It is a biological event. The vagus nerve, which links the brain to the heart, gut, and other organs, is the pathway through which a parent's regulated presence is transmitted to a child's body in real time. This is the science behind co-regulation, and it is what the Connection Checkup is designed to observe and strengthen.

Mother and baby making eye contact
Early Relational Health

A new focus area in pediatric care

The quality of emotional connections between a child and their caregivers, known as relational health, is now recognized as one of the strongest predictors of long-term health and wellbeing. Pediatric care is shifting to reflect this.

For decades, child development science focused primarily on cognitive and neurological milestones. The emerging consensus is that the relational environment a child grows up in shapes those outcomes just as profoundly, influencing brain development, cardiovascular health, stress regulation, immunity, sleep, and long-term behavioral and social outcomes.

Until now, families have had no way to measure, track, or strengthen their relational health. The Connection Checkup changes that.

American Academy of Pediatrics
The AAP is calling for a major shift in pediatric care, with a new and explicit emphasis on relational health as a core component of child wellbeing, placing it alongside traditional physical health metrics for the first time.
Key Concepts
Co-Regulation
The biological process by which a parent's calm, regulated state is transmitted to a child through presence, voice, touch, and eye contact, literally settling the child's nervous system in real time.
Attunement
The quality of emotional responsiveness between parent and child: how accurately and warmly a caregiver reads, mirrors, and responds to a child's emotional signals.
The Connection Window
The period from birth to age five when the nervous system is most plastic and the patterns of emotional connection are most readily shaped and strengthened.
Relational Health Index
OurConnect's validated scoring framework, powered by the Welch Emotional Connection Screen, that measures the quality of parent-child connection across four observable dimensions.
Free Guides

Practical science for everyday moments

Short, research-grounded guides on the moments that matter most. Free to download, no account required.

More Series Coming Soon

Support for the moments that matter most

Four additional video series are in development. Register your interest and we will let you know when they are available.

Coming soon
Family Nurture Intervention for NICU and Preterm Families
Support for parents navigating the NICU and the weeks after coming home, grounded in Dr. Welch's Family Nurture Intervention research.
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Coming soon
The Fourth Trimester
Connection and co-regulation in the earliest weeks after birth, when the relational foundation is being laid for everything that follows.
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Coming soon
Preschool Emotional Preparation
How strong relational health in the years before school translates into better emotional regulation, social readiness, and classroom behavior.
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Coming soon
Adoptive and Foster Families
Building deep emotional connection when the early relational history is complex, interrupted, or unknown, with science-backed guidance for the path forward.
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Your first scientifically validated
connection checkup.

Understand and strengthen the emotional connection between you and your child, backed by nearly five decades of peer-reviewed science.

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