Unit 2567: Language Acquisition

1. Introduction to Language Acquisition

• Definition and importance of language acquisition
• Overview of first and second language acquisition

2. Theories of Language Acquisition

2.1 Behaviorist Theory

• Key proponents (Skinner)
• Language learning as conditioning and imitation
• Strengths and limitations

2.2 Nativist Theory

• Noam Chomsky and the Language Acquisition Device (LAD)
• Universal Grammar concept
• Innateness hypothesis

2.3 Interactionist Theory

• Role of social interaction (Bruner, Vygotsky)
• Language acquisition as a collaborative process

2.4 Cognitive Theory

• Language development linked to cognitive development (Piaget)
• Emphasis on internal mental processes

3. Stages of Language Development

3.1 Prelinguistic Stage

• Crying, cooing, and early vocalizations

3.2 Babbling Stage

• Repetitive consonant-vowel combinations
• Importance for phonetic practice

3.3 Holophrastic Stage

• Use of single words to express whole ideas

3.4 Two-Word Stage

• Simple combinations reflecting relationships

3.5 Telegraphic Stage

• Short and simple sentences lacking function words

3.6 Complex Sentences Stage

• Development of grammar and syntax
• Use of conjunctions and morphology

4. Critical Period Hypothesis

• Definition and historical background
• Evidence supporting and challenging the hypothesis
• Implications for language learning

5. Bilingualism and Multilingualism

5.1 Benefits

• Cognitive advantages (executive function, problem solving)
• Cultural and social benefits

5.2 Challenges

• Language interference and transfer
• Code-switching phenomena
• Identity and emotional aspects

6. Individual Differences in Language Acquisition

• Age effects
• Cognitive abilities and learning styles
• Socio-economic status influences
• Exposure and input quantity/quality

7. Language Acquisition in Second Language Learners

• Similarities and differences with first language acquisition
• Factors affecting second language success (motivation, environment)
• Role of fossilization and interlanguage

8. Language Acquisition in Special Populations

• Language disorders (e.g., SLI, dyslexia)
• Hearing impairments and use of sign language
• Developmental delays and adaptive strategies

9. Language Acquisition and Technology

• Computer-Assisted Language Learning (CALL)
• Mobile applications for language learning
• Online resources and virtual environments
• Advantages and limitations of technology-mediated learning

10. Summary and Integration

• Recap of key theories and stages
• Interrelationship between individual differences and learning contexts
• Future directions in language acquisition research