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Speech delays or difficulties in children can be attributed to various causes; autism spectrum disorder is one possible reason. Language development progresses through specific stages according to age groups during childhood:
Within the first month, babies produce natural sounds like crying, coughing, and sneezing; by the end of the first month, their cries begin to vary according to different situations. In the second and third months, babies start to smile and produce consonants like "k", "g" and vowels like "a", "e", "o". Between four and six months, an increase in the number of vowel and consonant sounds is observed; towards the end of the sixth month, the child begins to combine consonants with vowels, producing sounds like "ba", "da", "ma".
Between seven and ten months, syllable repetitions like "ma-ma" are observed, and the baby produces unintelligible sound sequences resembling adult speech. From the eleventh month onwards, they begin to insert single-syllable words into these unintelligible sound sequences, subsequently pronouncing their first meaningful words.
Between twelve and eighteen months, children use words purposefully; they have a vocabulary of 3 to 50 words and point to objects and body parts. Between eighteen and twenty-four months, they follow simple directions, name objects and pictures; their vocabulary reaches 50 to 70 words.
Two years of age is a critical period when a child begins to walk, talk, and develop self-awareness. This rapid development makes the child independent in many aspects; the acquisition of motor skills and language ability has a significant impact on a child's independence. A two-year-old runs, climbs stairs with support, uses 70 or more known words, and forms simple two-word sentences. This period is also the "age of inquiry," during which the child persistently asks "how" and "why" questions.
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Within the first month, babies produce natural sounds like crying, coughing, and sneezing; by the end of the first month, their cries begin to vary according to different situations. In the second and third months, babies start to smile and produce consonants like "k", "g" and vowels like "a", "e", "o". Between four and six months, an increase in the number of vowel and consonant sounds is observed; towards the end of the sixth month, the child begins to combine consonants with vowels, producing sounds like "ba", "da", "ma".
Between seven and ten months, syllable repetitions like "ma-ma" are observed, and the baby produces unintelligible sound sequences resembling adult speech. From the eleventh month onwards, they begin to insert single-syllable words into these unintelligible sound sequences, subsequently pronouncing their first meaningful words.
Between twelve and eighteen months, children use words purposefully; they have a vocabulary of 3 to 50 words and point to objects and body parts. Between eighteen and twenty-four months, they follow simple directions, name objects and pictures; their vocabulary reaches 50 to 70 words.
Two years of age is a critical period when a child begins to walk, talk, and develop self-awareness. This rapid development makes the child independent in many aspects; the acquisition of motor skills and language ability has a significant impact on a child's independence. A two-year-old runs, climbs stairs with support, uses 70 or more known words, and forms simple two-word sentences. This period is also the "age of inquiry," during which the child persistently asks "how" and "why" questions.