Infant & Toddler Development andPsychology
From newborn to school readiness, combine scientific observation tools with psychological theory to support your child's growth from 0 to 6. Make every interaction meaningful and every milestone seen.
Development Observation
Record growth scientifically, month by month
Psychological Theory
Understand the reasons behind behavior
Interactive Games
Quality parent-child time through play
The 0-6 Development Landscape
From newborn to school readiness, explore developmental highlights by age and systematically assess progress with professional tools.
0-1 Years · Infancy
Gross and fine motor skills take shape; secure attachment is built
1-3 Years · Toddlerhood
Language explosion, autonomy and early social rules emerge
3-6 Years · Preschool
School readiness, social rules and learning habits
Child Development Assessment Tools
Age-matched, official-caliber assessment tools that give you insight into your child's development in minutes — results can be shared with family or a doctor.
Developmental Milestone Tracker
Official CDC checklists across social, language, cognitive & motor domains
StartParenting Risk Self-Check
28 items on parenting behavior, environment & caregiver well-being
Start Check3-6 Development Assessment Scale
Quantified assessment across 5 domains with suggestions
StartFamily & Child Development Tests
Child development, parenting styles, parent-child mental health
BrowseKindergarten Readiness Check
25 practical skills before school entry — available in US Kindergarten and China versions
Parenting Risk Check & Official Advice
Screen 28 risk factors; positive items link directly to targeted consultation advice and month-by-month play essentials
Start the CheckDQ & Erxin Scale Guide
A plain-language guide to developmental quotient DQ and the Erxin Scale-II: 261 items, 5 domains, score bands
Learn MoreExplore by Age
Every stage has its own wonder. Choose your baby's current age and begin your science-based parenting journey.
Newborn Stage
Observe basic reflexes, sleep patterns and early social responses
Exploration Begins
Track rolling over, grasping and social smiles
Active Development
Observe sitting, crawling and early babbling
Ready for Independence
Record standing, walking and first simple words
Toddler Exploration
Observe walking stability and growing language expression
Language Explosion
Record vocabulary growth and simple sentence building
Autonomy & Self-Awareness
Observe growing independence and social skills
Preschool Preparation
Record complex play and social interaction skills
The Four Development Domains
Comprehensive attention to every dimension of your baby's growth
Physical Movement & HealthCore
Observe gross and fine motor development
Language & CommunicationCore
Track language comprehension and expression
Self, Society & EmotionCore
Observe emotional expression and social skills
Cognition & RepresentationCore
Track cognitive ability and thinking development
Piaget's Cognitive Development
Sensorimotor Stage (0-2 years)
- Exploring the world through senses and actions
- Developing object permanence
- Beginning deferred imitation
Why do you needpsychological theoryguidance?
Knowing when a baby will do what is not enough. Understanding the why and the underlying psychological mechanisms helps parents handle parenting challenges with more confidence and build a closer, more secure attachment.
Parent Assessment Tools
Development observation is the foundation. These tools help you systematically assess your child's traits and reflect on your own parenting, so every observation is more purposeful.
Children's Multiple Intelligences
Explore multiple intelligences and executive functions for ages 3-5 (432 items, parent report)
Parent-Child Mental Health Test
Initial screening of your child's mental health from a parent's perspective
Parenting Styles Self-Assessment
Discover your parenting style: authoritative, authoritarian, permissive or neglectful
Parenting Discipline Awareness Test
Boundary-setting and discipline self-assessment grounded in developmental psychology
Ready to begin this wonderful journey?
Choose your child's age and start recording every precious growth moment.
Is your child over 3?
Move to the 3-6 Child Learning & Development Assessment to understand overall development across health, language, social, science and art.