Language Milestones By karenmendoza123 Jan 7, 2020 Baby is born Period: Jan 7, 2020 to Jan 7, 2021 Infancy 0-12 Months Jan 6, 2021 Content (Semantics) Infancy 0-12 Months Jan 6, 2021 Form (Phonology) 2-4 Months old Produces Cooing sounds "ooo" "aahh" and "mmmm" Early consonant and vowel sounds are easier for infants because they require less precise manipulation of the tongue, lips, or teeth. Jan 6, 2021 Use (Pragmatics) Infant 0-12 Months Period: Jan 7, 2021 to Jan 7, 2023 Toddlerhood 12-36 Months Period: Jan 7, 2023 to Jan 7, 2025 Preschool 36-60 Months