Early Signs of Developmental Delays (12–18 Months) – Checklist for Parents
What Are Developmental Milestones?
Developmental milestones are skills most children develop at certain ages, such as speaking, moving, interacting, and learning. While every child grows at their own pace, these milestones help parents understand how their child is progressing.
When a child is not meeting expected developmental milestones, it may be a sign that additional support could be helpful. Recognizing early signs of developmental delays allows parents to take action sooner and support their child’s growth.
Why Early Development Matters
Early childhood is a critical time for brain development. Skills like communication, movement, attention, and social interaction build the foundation for future learning.
When children receive the right support early—whether through simple strategies at home or early intervention services—they can make meaningful progress in communication, behavior, and learning.
Signs of Developmental Delays (12–18 Months)
Children develop at different rates, but some early signs may indicate that a child needs additional support.
Communication & Language
Limited or no words
Rarely responds to their name
Does not attempt to communicate needs
Motor & Physical Skills
Not walking or crawling independently
Difficulty using hands or picking up small objects
Appears stiff, floppy, or uncoordinated
Social & Emotional
Limited eye contact
Little interest in people or interaction
Rarely imitates actions or expressions
Cognitive & Learning
Limited curiosity about surroundings
Does not imitate simple actions
Minimal exploration or problem-solving
How to Support Your Child
If your child is not meeting developmental milestones, there are simple ways to begin supporting them:
Break activities into small, manageable steps
Use repetition and consistent routines
Model actions and language
Use visual support like gestures or pictures
Create a calm, structured learning environment
Resources like the Densing Teaching Method book series → provide structured, step-by-step activities to support communication, motor skills, and early learning while building confidence and independence.
The Importance of Early Intervention
Early intervention can make a significant difference in a child’s development. Services for children under age 3 are often available and may include speech therapy, occupational therapy, and developmental support.
The earlier a child receives support, the greater the opportunity to build essential skills and reduce frustration.
Downloadable Developmental Milestones Checklist (12–18 Months)
If you’re noticing these signs, use this Developmental Milestones Checklist for 12–18 months to track your child’s progress and identify areas where support may be helpful.
Please note: this checklist is not a diagnosis. For a formal evaluation, consult a pediatrician, psychologist, or other qualified professional.
👉 Download the Early Signs of Developmental Delays Checklist (12–18 months) →
Explore More Neurodivergent Checklists
Every child’s brain is unique, and neurodivergent traits can show up in many different ways. If you want to explore other areas of learning, behavior, and development, these individual checklists can help you observe specific traits and find strategies to support your child:
Neurodivergence Overview – Learn about neurodivergent traits, understand differences in thinking, learning, and behavior, and access a general neurodivergence checklist.
ADHD Checklist for Children – Signs, traits, and practical strategies for attention, focus, and impulse control.
Dyslexia Checklist for Children – Reading, decoding, and language-related traits.
Dyscalculia Checklist for Children – Number sense, math skills, and problem-solving differences.
Dysgraphia Checklist for Children – Handwriting, fine motor, and written expression challenges.
Dyspraxia Checklist for Children – Coordination, motor planning, and daily activity support.
Sensory Processing Disorder (SPD) Checklist – Sensory sensitivities, seeking or avoiding input, and self-regulation.
Executive Functioning Checklist for Children – Planning, organization, task completion, and memory support.
Each checklist links to a dedicated page with practical tips and strategies to help children thrive. Tracking behaviors over time can provide useful insights for parents and caregivers and guide discussions with professionals.
Observing Learning and Development Differences: Guidance for Parents
Seeing your child show signs that match one or more of these categories can feel overwhelming, but it does not automatically mean they have a diagnosis. Many behaviors may be part of a temporary developmental phase, while others may reflect a neurodivergent learning style. The key is to keep observing your child, track behaviors using checklists, and consult a pediatrician, psychologist, or specialist for professional guidance. While a diagnosis may initially feel overwhelming, it can be a crucial step in providing your child with the right support.
By focusing on your child’s individual strengths and needs, and using positive reinforcement and structured support, you can help them feel confident, engage fully in learning, and develop skills that will benefit them long-term. Understanding these differences early allows you to provide targeted strategies, and support your child’s growth in both academic and life skills.
Takeaway: Every child is unique, and early observation combined with practical strategies and professional guidance can make a meaningful difference in their development.