Supporting Your Child: 9-18 Months

Babies this age are ready to explore the world around them and are becoming more adventurous as they become more mobile. They are very curious and will investigate objects and people around them, but they still need the comfort and security that parents and other familiar adults provide.

Babies 9–18 months show strong attachment to the important adults in their lives – and they are fascinated with other children. They practice communication by babbling, and they understand (and can respond to) more and more words. 

All children grow and develop at their own pace. If you have concerns about your child’s development, contact your health care provider.

Colorado’s Early Learning & Development Guidelines

The Early Learning & Development Guidelines offer age-specific tips and resources to support children’s physical, cognitive and social-emotional development from birth through age 8. The Guidelines include downloads and videos that describe key aspects of children’s learning and development, age 9-18 months.