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1. Oral receptive language Ability to understand and comprehend spoken language
2. Oral expressive lan- Ability to communicate thoughts, feelings, and ideas through spoken
guage language
3. Written receptive lan- Ability to understand and comprehend written language
guage
4. Written expressive lan- Ability to convey thoughts, ideas, and information through written com-
guage munication
5. Prelinguistic Stage Stage from 0-12 months characterized by reflexive responses and atten-
tion to speech
6. Reflexive Responses Infants respond to environmental sounds and voices with reflexive be-
haviors
7. Attention to Speech Babies start to pay attention to speech sounds and the rhythm of
language
8. Preverbal Stage Stage from 12-18 months characterized by first words and simple com-
mands
9. First Words Children begin to comprehend and respond to simple words
10. Simple Commands Children follow simple commands
11. Single Word Stage Stage from 12-24 months characterized by vocabulary expansion and
understanding simple questions
12. Vocabulary Expansion Child's vocabulary grows, and they start to use single words
13. Understanding Simple Comprehension of simple questions
Questions
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14. Two-Word Stage Stage from 18-24 months characterized by combining words and un-
derstanding basic concepts
15. Combining Words Children begin to combine two words to form simple phrases
16. Understanding Basic Children understand basic concepts like 'big' and 'little'
Concepts
17. Early Multiword Stage Stage from 24-30 months characterized by sentence comprehension
and grammar development
18. Sentence Comprehen- Children start to understand and respond to more complex sentences
sion and questions
19. Grammar Development Basic grammatical structures emerge
20. Later Multiword Stage Stage from 30+ months characterized by complex sentences, grammar
refinement, and story comprehension
21. Complex Sentences Children understand and respond to more complex sentences and
questions
22. Grammar Refinement Refinement of grammatical structures and increase in vocabulary
23. Story Comprehension Ability to understand and follow simple stories and narratives
24. Mature Language Com- Stage from 3-5 years and beyond characterized by complex language
prehension skills, abstract thinking, and narrative skills
25. Complex Language Children understand and use more sophisticated language structures
Skills
26. Abstract Thinking Comprehension extends to more abstract and complex ideas
27. Narrative Skills
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