Development and Characteristics of Learners · 5 min read
Language Development
Typical Language Development
Language development follows a predictable sequence with individual variation in timing. Prelinguistic development during the first year includes cooing, babbling, and gesturing. First words typically emerge around twelve months. Vocabulary grows rapidly during the second year, with word combinations appearing around eighteen to twenty-four months.
Phonological development involves acquiring the sound system of the language. Infants can distinguish speech sounds from birth. Babbling gradually approximates the sounds of the native language. Children acquire sounds in a predictable sequence, with some sounds mastered early and others later. Most sounds are mastered by age eight, though some children take longer.
Morphological development involves learning the smallest units of meaning, including word endings and prefixes. Children begin combining morphemes as they combine words. Grammatical morphemes such as plural markers, verb tenses, and articles are acquired in a predictable sequence. Overgeneralization of rules is common, such as adding "-ed" to irregular verbs.
Syntactic development involves learning sentence structure. Children progress from single words to two-word combinations to longer sentences. Sentence complexity increases over time, with children learning to use embedded clauses, passive constructions, and other complex structures. By school age, children have acquired most basic sentence structures.
Semantic development involves learning word meanings and relationships. Early words often refer to objects, people, and actions in the child's immediate environment. Vocabulary grows exponentially during the preschool and school years. Children learn relationships between words, including synonyms, antonyms, and categories. Word knowledge continues to develop throughout life.
Pragmatic development involves learning to use language appropriately in social contexts. Children learn turn-taking in conversation, maintaining topics, and repairing communication breakdowns. They learn to adjust their language for different listeners and purposes. Understanding of nonliteral language, including idioms, metaphors, and sarcasm, develops gradually.
Language Differences and Disorders
Language differences reflect variations associated with dialect, bilingualism, or culture rather than disorder. Dialect differences involve systematic variations in pronunciation, vocabulary, and grammar associated with regional, social, or ethnic groups. Dialects are rule-governed linguistic systems, not deficient versions of standard English.
Bilingualism involves proficiency in two languages. Simultaneous bilingualism occurs when children acquire two languages from birth. Sequential bilingualism occurs when a second language is learned after the first is established. Code-switching between languages is a normal bilingual behavior, not a sign of confusion.
Second language acquisition follows predictable stages. The silent or receptive period involves listening and comprehending before speaking. Early production involves using single words and short phrases. Speech emergence involves longer sentences with grammatical errors. Intermediate fluency involves more complex language with continued development.
Distinguishing language difference from language disorder requires careful assessment. Disorder involves impairment relative to peers from the same linguistic and cultural background. Assessment should be conducted in both languages for bilingual students. Developmental patterns in first and second language should be considered. Parent and teacher reports across settings provide important information.
Language disorders affect the form, content, or use of language. Form disorders involve phonology, morphology, or syntax. Content disorders involve semantics and word knowledge. Use disorders involve pragmatics and social communication. Disorders may affect receptive language, expressive language, or both.
Phonological disorders involve difficulty with the sound system beyond what is typical for the child's age. Children may substitute, omit, or distort sounds. Phonological patterns may persist beyond typical developmental ages. Phonological disorders can affect reading development because of the relationship between phonological awareness and decoding.
Grammatical disorders involve difficulty with morphology and syntax. Children may omit grammatical markers, use incorrect word order, or have difficulty with complex sentences. Expressive language may be telegraphic, with function words omitted. Written language may reflect similar difficulties.
Vocabulary deficits affect word knowledge and word retrieval. Children may have smaller vocabularies than peers. They may have difficulty learning new words or retrieving known words. Word-finding difficulties result in circumlocution, hesitations, and use of nonspecific words. Vocabulary deficits affect reading comprehension and academic learning.
Pragmatic language disorders affect social use of language. Children may have difficulty with conversational skills, including turn-taking, topic maintenance, and relevance. They may not adjust language for different listeners or purposes. Understanding of nonliteral language may be impaired. Pragmatic disorders are a core feature of autism spectrum disorder.
Language and Literacy Connections
Oral language provides the foundation for literacy development. Children learn to read a language they already speak and understand. Oral vocabulary knowledge supports reading comprehension. Syntactic knowledge supports reading fluency and comprehension. Narrative skills support reading and writing of extended text.
Phonological awareness is critical for learning to read. Phonological awareness involves the ability to attend to and manipulate the sound structure of language. Skills include rhyme awareness, syllable awareness, onset-rime awareness, and phoneme awareness. Phoneme awareness, the ability to identify and manipulate individual sounds, is most strongly related to reading development.
Vocabulary knowledge affects reading comprehension. Children need to know word meanings to understand text. Academic vocabulary is particularly important for content area learning. Vocabulary instruction should be explicit and include multiple exposures in varied contexts. Wide reading also contributes to vocabulary development.
Oral language difficulties are associated with later reading difficulties. Children with language delays are at increased risk for reading problems. Phonological processing deficits underlie many reading disabilities. Language comprehension difficulties affect reading comprehension even when decoding is adequate. Early identification of language difficulties allows for early intervention.
Language Instruction for Students with Disabilities
Explicit language instruction is often necessary for students with disabilities. Skills that typically developing children acquire incidentally may need to be taught directly. Instruction should target specific language objectives. Multiple opportunities for practice with feedback should be provided.
Vocabulary instruction should be systematic and explicit. Target words should be selected based on importance and utility. Instruction should include student-friendly definitions, examples, and nonexamples. Multiple exposures in varied contexts are necessary for deep word learning. Word learning strategies should be taught.
Grammar instruction should be embedded in meaningful communication. Target structures should be modeled frequently. Recasting provides corrective feedback by restating the child's utterance in correct form. Expansion extends the child's utterance while modeling correct grammar. Explicit instruction may be necessary for some structures.
Pragmatic language instruction teaches social communication skills. Skills should be explicitly taught, modeled, and practiced. Social stories and video modeling can support learning. Role-playing provides practice opportunities. Generalization to natural settings should be promoted.
Augmentative and alternative communication supports students with significant communication impairments. AAC includes unaided systems such as gestures and sign language and aided systems such as communication boards and speech-generating devices. AAC supports rather than hinders language development. Selection of AAC systems should be individualized based on student needs and abilities.
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