The Developing Child
Move beyond basic milestones to understand the cognitive, social, and neurological mechanisms that drive a child's growth and behavior.
Like Duolingo, but for The Developing Child. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
24 levels across 3 sections, about 48 minutes end to end, roughly 10 days at five minutes a day. It moves through Decoding Behavior and Communication, Cognitive and Social Dynamics, and The Developing Brain and Environment. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in The Developing Child
- Behavior is the final visible step of an internal struggle, not the root cause
- Aggression often signals a lack of impulse control or an unmet sensory need
- Addressing the missing skill prevents future outbursts better than punishment
- The adult must be regulated first to provide a safe emotional anchor
- A child's nervous system 'borrows' the parent's calm through co-regulation
- Self-regulation is a complex skill that cannot be accessed during a meltdown
- Behavior as a lagging indicator
- Co-regulation hierarchy
- Physical states like hunger or fatigue drastically lower a child's threshold
- Loneliness or lack of connection often manifests as 'attention-seeking' acts
- Behavior is a lagging indicator of internal states
- Anger is frequently a secondary emotion masking fear or overstimulation
- Validation acknowledges the feeling as real without excusing the behavior
- The hierarchy of co-regulation before self-regulation
- Naming the emotion helps the child's brain move from 'fight' to 'think' mode
- Boundaries are more effective when the child feels understood first
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives The Developing Child the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
If a child suddenly hits a friend, what is most likely happening in their internal world?
Get it right to open this lesson and 23 more in the app.
Where The Developing Child takes you
- 1
Decoding Behavior and Communication
- Interpreting Behavior as Language
- Scaffolding Language and Emotional Literacy
- 2
Cognitive and Social Dynamics
- Executive Function in Action
- Navigating Peer Play and Conflict
- The Power of Productive Struggle
- 3
The Developing Brain and Environment
- Neuroplasticity and Brain Architecture
- Attachment and Long-term Regulation
- Designing Growth-Oriented Environments
3 sections · 8 units · 24 levels. Built to play, not to enroll.
You pick the voice
The Developing Child is taught in the Explain Like I'm 5 style: no big words. promise.. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
More Psychology on Tomo
The Developing Child: From Infancy to Preschool
Move beyond basic milestones to understand the neurological, physiological, and psychological mechanisms driving early childhood growth. Explore how temperament, language acquisition, and motor development intersect to form a unique personality.
The Thriving Three-Year-Old
Move beyond basic childcare into advanced developmental scaffolding. Learn to design high-level cognitive environments and complex play-based inquiries for the unique 'three-year-old' brain.
Why We Do What We Do
Unlock the hidden patterns behind human actions, from the habits that shape your day to the social forces that influence your biggest decisions.
Decoding Romantic Signals
Learn to interpret the unspoken language of attraction, dating dynamics, and emotional connection. Discover how to read genuine body language, spot mixed signals, and understand what drives romantic behavior.
Thinking Like a Psychologist
See past everyday surface drama by looking at the hidden mechanics of human behavior. Learn how clinical insights decode relationship loops, emotional triggers, and real human connection.
The Mechanics of Human Behavior
Move beyond pop-psychology tropes to understand how cognition, social pressure, and emotion actually shape human decisions. Learn the real mechanisms that drive everyday behavior and how to evaluate psychological claims with scientific rigor.
Start The Developing Child today.
Download Tomo, search The Developing Child, and play your first lesson in under a minute.