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Emotional and social development: Birth to 3 months.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/baby/pages/Emotional-and-Social-Development-Birth-to-3-Months.aspxOpens a new window[Accessed October 2024]

AAP.

Social development in preschoolers.

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American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/preschool/pages/Social-Development-in-Preschoolers.aspxOpens a new window[Accessed October 2024]

AAP.

Developmental milestones: 1 month.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/baby/pages/Developmental-Milestones-1-Month.aspxOpens a new window[Accessed October 2024]

AAP.

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Developmental milestones: 3 months.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/baby/pages/Developmental-Milestones-3-Months.aspxOpens a new window[Accessed October 2024]

AAP.

Developmental milestones: 7 months.

boy sucking thumb hugging his father

American Academy of Pediatrics.https://www.healthychildren.org/english/ages-stages/baby/pages/developmental-milestones-7-months.aspxOpens a new window[Accessed October 2024]

AAP.

Developmental milestones: 12 months.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/baby/Pages/Developmental-Milestones-12-Months.aspxOpens a new window[Accessed October 2024]

AAP.

mom and son laying on ground and smiling

Developmental milestones: 2 year olds.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/toddler/Pages/Developmental-Milestones-2-Year-Olds.aspxOpens a new window[Accessed October 2024]

AAP.

Developmental milestones: 3 to 4 year olds.

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American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/preschool/Pages/Developmental-Milestones-3-to-4-Year-Olds.aspxOpens a new window[Accessed October 2024]

AAP.

Emotional and social development: 4 to 7 months.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/baby/pages/Emotional-and-Social-Development-4-7-Months.aspxOpens a new window[Accessed October 2024]

AAP.

baby girl holding an earphone next to her ear

Emotional and social development: 8 to 12 months.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/baby/pages/Emotional-and-Social-Development-8-12-Months.aspxOpens a new window[Accessed October 2024]

AAP.

Emotional development: 1 year olds.

phone with BabyCenter app

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/toddler/Pages/Emotional-Development-1-Year-Olds.aspxOpens a new window[Accessed October 2024]

AAP.

Emotional development: 2 year olds.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/toddler/pages/Emotional-Development-2-Year-Olds.aspxOpens a new window[Accessed October 2024]

AAP.

Eva Dasher

Social development: 1 year olds.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/toddler/pages/Social-Development-1-Year-Olds.aspxOpens a new window[Accessed October 2024]

AAP.

Social development: 2 year olds.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/toddler/Pages/Social-Development-2-Year-Olds.aspxOpens a new window[Accessed October 2024]

AAP.

Cognitive development in preschool children.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/preschool/Pages/Cognitive-Development-In-Preschool-Children.aspxOpens a new window[Accessed October 2024]

AAP.

Growing independence: Tips for parents of young children.

American Academy of Pediatrics.https://www.healthychildren.org/English/ages-stages/preschool/Pages/Growing-Independence-Tips-for-Parents-of-Young-Children.aspxOpens a new window[Accessed October 2024]

CDC.

Important Milestones: Your Child By Four Years.https://www.cdc.gov/ncbddd/actearly/milestones/milestones-4yr.htmlOpens a new window[Accessed October 2024]

CDC.