Language Development in Children

Introduction

  • Study of language development in children.

  • Focus on the different stages of language development.

Understanding Language: Receptive vs. Productive

  • Receptive Language

    • Definition: Understanding what someone is saying.

    • Timing: Develops well before the ability to produce language; begins around 6-7 months of age.

    • Example: A child can understand commands like "no" during this age.

  • Productive Language

    • Definition: The ability to speak and produce language.

    • Timing: First words typically occur after the age of 1 year.

Stages of Language Development

  • Overview of the five stages of language development.

1. Cooing

  • Timing: Begins between 1-2 months of age.

  • Description: Production of soft, sweet sounds resembling bubbles.

  • Personal anecdote: Mention of granddaughter cooing at three months.

2. Babbling

  • Timing: Development starts around 3-4 months.

  • Description: Development of louder sounds characterized as "babbling" (e.g., "blah blah blah").

  • Unique Characteristics:

    • All babies sound the same regardless of their native language, as they learn to produce sounds before mirroring spoken language.

    • Stage lasts from approximately 3-4 months up until about a year.

    • Ability to understand and differentiate speech sounds from any language is present before this stage closes after word formation begins.

3. One-Word Stage

  • Timing: Starts around 1 year of age.

  • Description: Communication through single words, focusing on familiar objects (e.g., "mama," "dada," "up").

  • Alternative Term: Known as the holophrastic stage.

  • Duration: Lasts from about 1-2 years of age.

4. Two-Word Stage

  • Timing: Begins around 2 years of age.

  • Description: Ability to communicate using two words (e.g., "me up," "I go").

  • Duration: Typically lasts less than a year, followed by the next stage of language development.

5. Telegraphic Speech

  • Timing: Generally occurs around 2.5 years of age.

  • Definition: Communication using primarily nouns and verbs; omits grammatical fillers (like "and," "the").

  • Comparison: Analogy with text messaging due to brevity.

6. Sentence Formation

  • Timing: Predominantly emerges around 2.5 years of age, but can vary.

  • Description: Full sentence use that can express more complex ideas.

Theories of Language Development

  • Discussion of various theories explaining how language develops in children.

1. Social Learning Theory (B.F. Skinner)

  • Perspective: Emphasizes nurture; the idea that language development is shaped by environmental interactions.

  • Mechanism:

    • Language is learned through imitation of caregivers and peers.

    • Grammar is understood through conditioning (praise for correct speech and correction for mistakes).

2. Innate Language Theory (Noam Chomsky)

  • Perspective: Contrasts with Skinner's theory and emphasizes nature.

  • Central Idea: Humans are born with an inherent ability to acquire language (the Language Acquisition Device).

  • Key Points:

    • Rapid language acquisition in early childhood indicates innate abilities.

    • Language development follows a critical timeline; puberty marks a sensitive period post which language acquisition diminishes significantly.

Critical Period for Language Acquisition

  • Explanation of term: A timeframe (before puberty) where language must be learned.

  • Evidence from feral children where neglect and isolation prevent language acquisition.

Case Studies of Feral Children

  • Examples of children raised in isolation that support the critical period hypothesis:

1. Victor (the Wild Boy of Aveyron)

  • History: Found in the 1800s, lived in the wild, unable to develop functional language despite rehabilitation efforts.

2. Jeannie

  • Background: Isolated for 13 years by her father; minimal exposure to language resulted in limited communication abilities upon discovery.

  • Rehabilitation Efforts: Attempted to teach her some words; faced challenges with cognitive and social skills due to absence of language exposure during the critical period.

3. Oxana Malaya

  • Background: Raised among dogs in a yard, exhibited canine behaviors and communication upon rescue.

  • Rehabilitation: Attempting social reintegration; limitations persist due to early years spent without human interaction.

Linguistic Determinism

  • Definition: The idea that language fundamentally shapes thought processes.

  • Key Concept: Language determines how we think, not the other way around.

    • Example: Cultural implications seen in languages with limited tenses affecting the concept of time for speakers.

Conclusion

  • Emphasization on the interaction of innate abilities and nurturing environments in language development.

  • Importance of exposing children to language before the critical period to avoid acquisition limitations.