Child Development

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If you have a placed child under 3 years of age, you can request early intervention services online or by calling (602) 532-9960 or toll-free (888) 439-4509; seek the help of your DCS caseworker with enrollment if necessary.

The Arizona Early Intervention Program (AzEIP) is Arizona's statewide system of supports and services for infants and toddlers (birth to 36 months) with developmental delays or disabilities and their families. Developmental delays mean a child has not reached fifty percent of the developmental milestones expected at his/her chronological age in one or more of the following areas of development: physical, cognitive, language/communication, social/emotional, and adaptive self-help.

For children and youth (ages 3-21), you can receive special education and related services under the Individuals with Disabilities Education Act (IDEA), Part B. Refer to your school district to request an assessment and develop an IEP for the child, if needed.

The Centers for Disease Control and Prevention has developed information sheets to help you understand childhood development, positive parenting skills, safety concerns, and basic health for all stages of development. Please click on the appropriate stage to learn more:

Infants (0-1 years)

Toddlers (1-2 years)

Toddlers (2-3 years)

Preschoolers (3-5 years)

Middle Childhood (6-8 years)

Middle Childhood (9-11 years)

Young Teens (12-14 years)

Teenagers (15-17 years)

The Child Mind Institute has child development information in their “Parents Guide to Developmental Milestones” for the following ages: 1 month, 3 months, 7 months, 1 year, 2 years, 4 years, and 5 years. This guide provides parents with information about milestones in the developmental areas of movement, language, cognitive, social and emotional in addition to listing warning signs of developmental delays that should be discussed with the child's pediatrician. has a handout describing developmental milestones for different age groups in the following 5 areas: motor, communication, cognitive, social and emotional, and adaptive skills; click here to view handout. has another handout discussing red flags (warning signs) for developmental and behavioral problems; click here to view handout.

Click here to view a list of some additional online resources in the area of child development.

Child Trends News Service (CTNS) has videos on the latest in child development research. Click here to watch videos on CTNS YouTube channel. Click here to access videos on their website.

The Annie E. Casey Foundation’s video, “Promoting Brain Gains for Youth Emerging From Foster Care,” discusses adolescent brain development and ways child welfare systems (including foster parents) inhibit or encourage opportunities for the successful transition to adulthood. Video located adjacent. Click here to see their report "The Road to Adulthood: Aligning Child Welfare Practice with Adolescent Brain Development" for more information.

ZERO TO THREE works to ensure that babies and toddlers benefit from the family and community connections critical to their well-being and development. Healthy connections help build babies’ brains. Their website has short articles and videos about many topics, including challenging behaviors, sleep, trauma and stress, and discipline. Website

Click here for a listing of typical and problematic sexual behaviors for children of different ages.

Yes, the American Academy of Pediatrics (AAP) has issued guidelines for digital media use for children of various ages as many studies have shown negative impacts of digital media use on child development. Click here for an informative chart to help you develop your family’s personalized media use plan. Website