First Language Acquisition and Theories of Development

The Biological and Innate Nature of Language

• Species-Specific Capacity (Dan Slobin):

  • In The Human Language Series 2 ($1994$), Dan Slobin posits that the capacity to learn language is deeply ingrained in the human species.

  • He compares language acquisition to other biological milestones, such as the capacity to walk, grasp objects, or recognize faces.

  • Environment appears to have little impact on the fundamental ability to learn; no significant differences are found between children raised in "congested urban slums," "isolated mountain villages," or "privileged suburban villas."

• The Inevitability of Language (Noam Chomsky):

  • Chomsky ($1994$) argues that humans are biologically "designed" to walk and speak.

  • He asserts that the notion that children are "taught" to walk is impossible/false; similarly, nobody truly "teaches" a child language.

  • A central tenet is that one cannot prevent a child from learning a language if they are exposed to it.

Theories of Language Acquisition: Behaviourism

• Origins and Proponents:

  • Proponent: B.F. Skinner.

  • Period of Popularity: $1950s$ and $1960s$.

• Theoretical Framework:

  • Language learning is viewed as a form of human behavior similar to any other learned activity.

  • It is defined as the production of correct responses to specific stimuli through a process of reinforcement.

• The Four Pillars of Language Learning (Behaviourism):

  1. Imitation: The word-for-word repetition of a stimulus.

  2. Practice: The repetitive manipulation of linguistic forms.

  3. Feedback on Success: Receiving positive reinforcement for correct usage.

  4. Habit Formation: The internalization of language through repetition.

• The Mechanism of Acquisition:

  • Language Input (Stimulus) $\rightarrow$ The Learner (Organism) $\rightarrow$ Imitation (Response).

  • Example: If a parent says, "This is a pencil," and the child repeats, "This is a pencil," the cycle is established.

  • Four-Step Process: Imitation $\rightarrow$ Reinforcement $\rightarrow$ Repetition $\rightarrow$ Habituation.

• Types of Reinforcement and Habits:

  • Positive Reinforcement: Includes praise or tangible rewards to encourage correct performance.

  • Negative Reinforcement: Consists of corrections aimed at fixing errors.

  • Good Habit: Refers to correct linguistic performance.

  • Bad Habit: Refers to linguistic errors.

• Criticisms of Behaviourism:

  • It overemphasizes external factors, such as the role of parents providing a model for imitation.

  • It ignores the internal cognitive role of the learner.

  • It over-relies on the concept of imitation; in reality, children are creative with language and produce sentences they have never heard before.

Theories of Language Acquisition: Nativism

• Origins and Proponents:

  • Proponent: Noam Chomsky.

  • Year: $1959$.

  • Core Principle: "It’s all in your mind."

• Chomsky’s Core Propositions:

  • Children are biologically programmed for language development, just like other biological functions.

  • The environment serves only a basic function: providing samples of language via other people. The child’s biological endowment does the rest of the work.

  • Children possess an innate ability to discover the underlying rules of a language system.

• Critique of Behaviourism by Chomsky:

  • Chomsky argues behaviourism is insufficient because:

    1. Children understand more about language structure than they could possibly learn from the limited samples they hear (The "Poverty of Stimulus").

    2. The language children hear is often "messy" (false starts, incomplete sentences, slips of the tongue), yet they successfully learn to distinguish grammatical from ungrammatical speech.

    3. Parents do not systematically correct or instruct children on grammatical rules.

• Key Nativist Concepts:

  • Universal Grammar (UG): Abstract principles that make up the child's innate knowledge of language, applicable to all human languages.

  • Language Acquisition Device (LAD): An imaginary "black box" in the brain containing the principles of Universal Grammar.

  • The Activation Process: Language samples in the environment act as a "trigger" to activate the LAD. Once active, the child matches the innate UG to the specific structures of the language they are hearing.

• Evidence for Nativism:

  • Nearly all children learn their native language at an age when they cannot learn other complex tasks ($3$ or $4$ years old).

  • Language seems modular (separate from other cognitive skills like social grace or general creativity).

  • Input does not contain all possible rules, yet children master them.

  • Animals are incapable of mastering symbol systems as complex as those of a human toddler.

• Criticisms of Nativism:

  • Critics argue there is too much focus on the "final state" (adult linguistic competence) and not enough on the developmental stages.

  • Developmental psychologists argue that language is not independent of other experiences and cognitive development; children learn from the patterns available in environmental input.

Theories of Language Acquisition: Cognitive Approach

• Origins and Proponents:

  • Proponent: Jean Piaget.

  • Year: $1952$.

  • Core Principle: Language learning is a subset of a child's overall cognitive development.

• Theoretical Framework:

  • A child's language development relies on their understanding of the world (cognition).

  • Specific Example: A child cannot correctly use words like "bigger" or "more" until they conceptually understand the underlying ideas of size and quantity.

  • Cognitive understanding is built through physical interaction with objects (touching, shaking, manipulating).

  • Language is one of several symbol systems used to represent knowledge gained through these physical interactions.

• Piaget’s Stages of Cognitive Development:

  1. Sensorimotor Stage (Birth to $2$ years):

     • Infants are aware only of what is immediately in front of them.

     • Learning occurs through trial and error (shaking, throwing, mouthing objects).

     • Object Permanence: ($7$ to $9$ months) Realizing objects exist even when not visible.

     • End of Stage: Increased mobility (crawling/walking) leads to early language development, signifying symbolic ability.

  2. Preoperational Stage ($2$ to $7$ years):

     • Development of symbolic thinking, memory, and imagination.

     • Understanding of past vs. future and engagement in make-believe.

     • Thinking is intuitive and egocentric; inability to grasp complex cause-and-effect or time comparisons.

  3. Concrete Operational Stage ($7$ to $11$ years):

     • Logical and concrete reasoning emerges.

     • Awareness of external events; realization that their own thoughts/feelings are unique.

     • Operational Thinking: Ability to perform reversible mental actions.

     • Inability to solve problems with multiple variables systematically.

  4. Formal Operational Stage (Adolescence to Adulthood):

     • Logical use of symbols related to abstract concepts (e.g., algebra, science).

     • Ability to formulate hypotheses and systematic variable analysis.

     • Ability to ponder concepts like justice.

Theories of Language Acquisition: Interactionist Approach

• Core Principle: Focuses on the interplay between biological factors and the social environment.

• Proponents: Bruner and Vygotsky.

• Bruner’s Contributions:

  • LASS (Language Acquisition Support System): A set of strategies parents use to help children learn.

  • Scaffolding: Parents deliberately use language at a level slightly more complex than what the child can currently understand to push their development forward.

• Vygotsky’s Sociocultural Theory:

  • Language develops primarily from social interaction.

  • Zone of Proximal Development (ZPD): The gap between what a child can do independently and what they can do with the help of a more advanced interlocutor (adult or peer).

  • Conversations are the origins of both thought and language.

• Criticisms of the Interactionist Approach:

  • Research suggests parents rarely give direct feedback on the "correctness" of grammar; they usually focus on meaning.

  • Social practices vary wildly across cultures. Some cultures do not practice "scaffolding" or specific interactionist methods, yet their children acquire language at the same rate as Western children.