Classes
Self-paced courses built around developmental windows. Starting with the toddler years — language, autonomy, big feelings, and what your child needs at each stage.
For parents of young children
Understand what is happening underneath behavior.
Classes, free tools, and articles that translate developmental science into calmer choices for everyday family life.
By Matthew McArthur — M.A. developmental psychology, child development specialist, and parent coach in Los Angeles.
Source
Peer-reviewed developmental science
Format
Short lessons for real parenting days
Tone
Clear, practical, and non-shaming
What's here
Four ways to understand your child better.
Free tools
Short, practical references for everyday moments — meltdowns, sleep, limits, repair, and the milestone tracker. Built from research, free with no account needed.
Articles
Research explained without buzzwords or parenting shame. What serve-and-return actually means. What the evidence says about screen time. What to do with all of it.
Growing Minds AI
Ask a parenting or development question. Get a research-grounded answer — not generic internet advice. A private AI tutor built around developmental science.
Classes
Focused courses for the early years.
Each class is built around a developmental window — what's happening in your child's brain and body, and what that means for you day to day.
Coming soon Available first · Self-paced
The toddler years
Ages 1–3
How language, autonomy, and big feelings unfold — and what your child actually needs from you at each stage.
Coming soon Self-paced
Birth to 12 months
Ages 0–12 months
A clear guide to your baby's development, cues, and the first year — without rigid rules.
In development
The preschool years
Ages 3–5
Play, self-regulation, friendship, and the transition to school — grounded in what the research actually shows.
In development
Family systems & stress
Any age
How family stress, relationships, and caregiving patterns shape your child's development.
How classes work
Built for busy parents.
Short and self-paced
Designed for nap time or after bedtime. Start, stop, and revisit lessons whenever you need.
Research, not trends
Built on developmental science — not parenting fads, rigid rules, or one-size-fits-all advice.
For your real life
Practical guidance you can use today — not idealized theory or scripts that only work in perfect conditions.
Parents don't need more pressure.
They need better explanations.
Matthew McArthur — Growing Minds Science
About Matthew
The person behind these classes.
Matthew McArthur is a child development specialist who translates developmental research into guidance parents can actually use every day. His work draws on direct experience with families, years of teaching infant and toddler development, and graduate training in developmental psychology.
Parents don't need more pressure. They need better explanations of what is happening, and a calm way to respond to it.
- UCLA — B.A. in Psychology
- SDSU — M.A. in Developmental Psychology
- Practice — Child Development Specialist and parent coach
- Teaching — Infant and Toddler Socialization class in Los Angeles
Waitlist
Be first when classes open.
Join for early access when the toddler class launches, updates as new courses open, and occasional research-backed notes on early development.
You'll also receive the free milestone tracker — plain-language milestones for the first five years, no account required.