poverty of the stimulus
Definition - A linguistic nativist argument that claims that our ability to learn and use natural language can't be derived solely from the limited and flawed linguistic environmental data that children are exposed to, therefore this must be enhanced by some sort of innate linguistic capacity.

1. Click here to read Empirical assessment of stimulus poverty arguments, a Pullum and Scholz critique of this type of argument.

Etymology -
The term was coined by Chomsky in his lecture series entitled Rules and Representations.

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