Nativist

Nativist learning theory

The nativist theory is often contrasted with the Behavioral Theory. Influential behaviourist theorists, such as Skinner and Watson, argue that language (verbal behaviour, as they call it) is learned through exposure to language, say, at home or at school. This means language behaviours are modelled, usually by an adult, and then reinforced through reward (for 'correct' language uses) or punishment (for 'incorrect' language use).

Nativists, on the other hand, believe that children are 'wired' to learn a language, almost regardless of their environment.

Nature vs. Nurture

For many years, behaviourist theorists were winning the debate, mainly due to a lack of scientific evidence behind the nativist theory. However, all that changed with the arrival of Noam Chomsky. Chomsky is one of the most influential nativist theorists and helped revolutionize the field of linguistics in the 1950s and 60s by treating language as a uniquely human, biologically based, cognitive ability.

Chomsky and the Nativist Theory

Chomsky is often regarded as the father of nativist theory. During the 1960s, Chomsky questioned the idea that the human mind begins as a 'blank slate' and rejected the behaviourist theory because children receive 'impoverished language input' (baby talk) when growing up.

Chomsky also questioned how children could demonstrate signs of learning grammar before receiving any formal education on grammatical rules. He suggested that the human brain must have evolved to contain certain linguistic information from birth which helps children figure out the basic structures of language.

Chomsky believes that the basic concepts of language are innate and are influenced by language environments. For example, children growing up in England would hear English and therefore learn English. He suggests that a child's predisposition to learn a language is triggered when they hear speech and that their brains begin to interpret what is heard based on underlying structures and principles it already 'knows'.

According to Chomsky, this innate ability to easily learn a native language is due to two things: the language acquisition device (LAD) and Universal grammar.

The Language Acquisition Device (LAD)

The language acquisition device, or LAD for short, is a hypothetical 'tool' in the brain that contains specific knowledge about language and grammar. Chomsky proposed the LAD to help explain how children are able to comprehend the basic structures of language from such a young age. Chomsky suggests that a child's LAD is triggered once they hear speech.

Chomsky stated that this part of the brain is a uniquely human trait and cannot be found in other animals, which helps explain why it is only humans who can communicate through language.

Universal grammar

The term Universal Grammar has been used to describe the knowledge contained within the LAD.

Of course, all languages are different, and humans assign different meanings to different sounds worldwide. Chomsky does not believe that a child born in England has an innate ability to speak English or that a child born in China can miraculously speak Chinese. Instead, he suggests that all human languages share many of the same common grammar principles.

For example, most languages:

• Differentiate between verbs and nouns
• Have a way of talking about the past and present
• Have a way of asking questions
• Have a counting system

This sharing of common grammar principles is what Chomsky refers to as Universal Grammar. According to Universal Grammar theory, the basic grammatical structures of language are already encoded in the human brain at birth. It is a child's environment that will determine which language they will learn.

Fig 1. Chomsky argued that children have an innate ability to learn a language.

Here are the key principles of Chomsky's model of language acquisition:

• Everyone is born with the innate ability to learn a language.
• Learning a language is instinctive.
• Every child is born with a Language Acquisition Device (LAD).
• The LAD is a tool in the brain that facilitates the learning of language and grammar.
• All human languages share basic grammatical rules that humans have a subconscious ability to learn.
• Grammar is a necessary skill needed for learning any language.

Examples of the Nativist Theory

Let's take a look at some examples of the nativist theory in action:

Fig 2. Children make virtuous errors.

Criticisms of the Nativist Theory

The nativist theory has been met with several criticisms.

Firstly, nativism is often perceived as too theoretical and lacking scientific proof. Jeffrey Elman et al. (1996) ² pointed out that it is almost impossible to judge what knowledge is innate and exactly how it could be coded in a person's genes.

Secondly, Chomsky tended to look more at complex explanations of grammatical structures rather than studying actual children themselves, meaning there is little empirical evidence to validate his theory. Subsequently, Chomsky's theory fails to account for real-life relationships, external factors, and motivations to learn that children may face in their day-to-day lives.

Interactionist theorists, such as Bruner and Vygotsky, examine the biological and social perspectives to explain how children develop language. This demonstrates a move away from the nativist theory as it fails to recognize the importance of social environment in language acquisition.

Thirdly, although scientists have identified locations in the brain used specifically for language processing, such as Broca's area and Wernicke's area, a specific area that could be defined as the LAD has never been found.

¹ S, Pinker. The Language Instinct. 1994

² J, Elman et al. Rethinking Innateness: A connectionist perspective on development. 1996