May 13, 2026
From the moment a baby is born, their brain is forming over 1 million new neural connections per second, building the foundations for how they will learn, think, and regulate their emotions for the rest of their life. The importance of this early period is often overlooked, but it is a critical window of opportunity for positive connection and relationship building that will shape the way they move through the world. Research from national leaders like Zero to Three (ZTT) and Harvard Center on the Developing Child has advanced our understanding of how early relationships and experiences shape lifelong outcomes, and at Healthi Kids, our role is to translate that research into practical, meaningful support for the families, caregivers, and communities that we serve locally. Infant and early childhood mental health doesn’t just live in the data; it lives in homes, childcare settings, pediatric offices, and neighborhoods across our region.
What is infant and early childhood mental health, or IECMH? Zero to Three defines it as:
“The developing capacity of the infant and young child to form close and secure relationships; to experience, manage, and express a full range of emotions; and explore the environment and learn—all in the context of family, community, and culture.”
In other words, IECMH is how babies and young children learn to connect with others, express and handle their emotions, and explore the world around them starting from birth. IECMH is not about diagnosing babies or expecting perfection from their caregivers; instead, it is about the relationships built by the everyday interactions between babies and the adults who care for them. Harvard and ZTT reinforce this idea, explaining that early experiences shape the architecture of the developing brain, creating either strong or fragile foundations for future health and learning.
One of the most consistent findings in IECMH research is that responsive, consistent relationships are the core determinant of healthy brain development. When a baby or toddler coos, points, cries, or gestures and a caregiver is consistently responsive, the brain builds strong neural connections that tell them that they are seen, heard, and cared for. These “serve and return” interactions are fundamental to emotional regulation, language development, and building social skills. Through these loving, everyday experiences, young children build a strong foundation for learning, behavior, and overall health.
So, what does this look like in everyday life?
♥ A caregiver soothing a crying baby
♥ A predictable routine that helps a baby feel secure
♥ Reading, singing, or playing together
♥ Following your child’s lead and encouraging curiosity
♥ A trusted professional reassuring a parent that their child’s behavior is communication, not misbehavior
Small, everyday moments can create big connections for you and your young child, and Healthi Kids is here to be a resource to help you and your family foster positive emotional and cognitive development in simple, practical ways. By grounding our work in data and lived experience, our hope is to ensure that every baby and young child in our region can thrive, and that their caregivers have the tools to make it happen. When families, providers, and communities can align around what the science tells us and translate it into meaningful action, we can make a difference for countless children and families across our region.
Learn more and find resources at Love From the Start.
This blog was researched and written by Anna Laurenza, MPH, early childhood project coordinator for the Healthi Kids Initiative at Common Ground Health. In her role, Laurenza coordinates and executes Healthi Kids’ initiatives to advance infant and early childhood mental health throughout the Finger Lakes region. She works closely with colleagues and partners to develop strategies and tactics that center the importance of early child-caregiver relationships for lifelong health and wellbeing.