Study Notes on the Development of Language
THE DEVELOPMENT OF LANGUAGE
The development of language in children represents a universal human achievement, with all children acquiring the major elements of language by the ages of three to four, irrespective of the complexity of the languages surrounding them. Language, akin to music, is found in every society around the globe, highlighting its fundamental importance in human cultures (Mehr et al., 2019).
Theoretical and Practical Questions Surrounding Language Development
Language development raises numerous critical and challenging questions, including:
Do infants, or even developing fetuses, attend to language?
What elements of speech and language can they perceive early on?
How do young children master complex grammatical structures?
Is language a uniquely human trait, or do other animals possess language as we understand it?
If we raised a chimpanzee or parrot as a human child, would they acquire language similarly to a human child?
Do talking parrots comprehend the meaning of what they say?
Are there theories that adequately explain how language develops?
Is language a distinct capacity or simply a component of overall cognitive ability?
What knowledge is necessary for a person to use adult-like language effectively?
Are the processes involved in language development universal, akin to learning to walk?
What individual differences exist in language development?
What can we do to address atypical language development?
Is it feasible for children or adults to acquire multiple languages with native-like proficiency?
Is there a critical period wherein language acquisition must occur for it to be effective?
These questions shape the course of research on language development and guide the structure of this text.
Overview of Language Development
Language acquisition begins at birth. Infants initially demonstrate communicative abilities even before they utter their first words.
Communication Development in Infancy
Listening and Preference: Research indicates that infants hear and respond to the language spoken around them even in utero, showing a preference for their native language at birth.
Social Interaction: Infants exhibit an interest in social interactions, making eye contact, responding to emotional tones, and taking turns in conversational exchanges.
Early Comprehension and Speech: By around 11 months, infants often understand around 50 words and may express their desires non-verbally by pointing. Their first words typically emerge around this same age, paralleling significant physical milestones like walking.
Phonological Development: Learning Sounds
Babbles and Early Speech: Around six months, infants start to babble, producing sounds that will eventually transition into recognizable words.
First Words: These words often emerge during the second year, showcasing universal trends in phonological development; for instance, a babble like "ba ba" evolves into actual words such as "baba" for bottle.
Challenges in Sound Production: Children might struggle with certain sounds or combinations, which vary by language.
Semantic Development: Understanding Meanings
Referents: Young children's early vocabularies are often concrete, dominated by terms that refer to visible objects or people in their immediate environment (e.g., "doggie," "Mommy").
Complexity and Metalinguistic Awareness: As children enter school, their vocabulary and comprehension become significantly more complex, accompanied by enhanced metalinguistic awareness—understanding language as an object in its own right.
Syntax and Morphology in Early Language
Two-Word Combinations: By age two, children typically begin forming two-word phrases, expressing simple relationships (e.g., “More milk!”) without grammatical modifications expected in adult speech.
Grammatical Progression: As children’s utterances grow longer, they start incorporating grammatical constructs such as articles and prepositions, which though universal in occurrence, vary in sequence across languages.
Communicative Competence
Linguistic vs. Communicative Competence: Linguistic competence (knowledge of phonology, morphology, syntax, and semantics) must be complemented by communicative competence—the social rules governing language use. For example, politeness in requests is derived from pragmatic knowledge.
Theoretical Perspectives on Language Acquisition
Several theoretical frameworks surround the debate over how language acquisition occurs:
Learning Theorists: These theorists suggest language is acquired through reinforcement and teaching; interactions between adults and children shape understanding and production.
Linguistic Theorists: They posit language as an innate faculty, deeply embedded in genetic coding.
Cognitive Interactionists: They view language acquisition as part of general cognitive development and focus on how neural pathways are strengthened in response to exposure to language.
Social Interactionists: They emphasize motivation for communication, the role of child-directed speech (CDS), and the significance of gestures.
Individual Differences in Language Development
Individual variation is evident in language acquisition. Factors such as temperament, cognitive styles, and social environments play a significant role. Differences can also be influenced by social class, gender, and whether the child is raised in a monolingual or bilingual household.
Atypical Language Development
Atypical language development is explored, particularly cases where children face developmental challenges such as hearing impairments or autism. While some may show normal progression at a slower pace (e.g., children with Down syndrome), others may exhibit atypical patterns. This text references these diversities for context and understanding.
Language and Literacy in School Years
By kindergarten, children typically know about 8,000 words and can navigate different linguistic contexts. They develop the ability to produce decontextualized language—critical for reading and writing.
Bilingual Language Development
The landscape of language acquisition has expanded to include bilingual children, recognizing that many children worldwide are bilingual to varying degrees. Distinctions are made between simultaneous bilingual acquisition and second-language acquisition.
The Structure of Language and Language Learning
Linguistic competence is distinguished from performance, as everyday communication often manifests performance errors that do not reflect underlying competence.
Phonology, Morphology, Syntax, and Semantics Explained
Phonology: Pertains to speech sounds, their combinations, and phonetic accuracy.
Morphology: Involves morphemes, the smallest units of meaning in language—free morphemes can stand alone while bound morphemes cannot.
Syntax: Encompasses the rules governing sentence structure, allowing for the generation of new sentences and transformations.
Semantics: Involves mental lexicon and hierarchical organization of word meanings.
The Biological Bases of Language
Language is thought to have evolved as a species-specific trait in humans, supported by biological adaptations. Key biological components relate to brain architecture, the FOXP2 gene, and developmental patterns seen across cultures.
The Study of Language Development
The systematic study of language acquisition has evolved through varied techniques, starting from historical observations to advanced technological applications in modern research.
Techniques and Methodologies
Contemporary studies utilize observational and experimental approaches, and data-sharing initiatives like the Child Language Data Exchange System (CHILDES) facilitate extensive research capabilities.
Summary
Children develop linguistic competence across multiple areas—phonology, morphology, syntax, and semantics—embedded in social contexts through social interaction. As research progresses, comprehensive investigations into both typical and atypical patterns elevate our understanding of language development's complexities.