How did Noam Chomsky’s ideas contribute to the cognitive revolution?

Noam Chomsky played a pivotal role in the cognitive revolution by challenging the prevailing mid-20th-century view of behaviorism, which sought to explain human activity solely through observable stimuli and responses.12

Chomsky’s contributions were instrumental in shifting scientific focus toward internal mental processes:

• Refuting Behaviorism: In his 1959 review of B.F. Skinner’s Verbal Behavior, Chomsky argued that language could not be reduced to learned behaviors or reinforcement. He observed that humans possess the unique ability to understand and produce an infinite number of sentences they have never previously encountered, suggesting the existence of internal systems for representing and applying grammatical rules.23
• Mentalistic Theory of Language: Chomsky proposed that language is a biologically based, uniquely human cognitive capacity. He emphasized the speaker's creative linguistic competence—the internal knowledge of grammar—rather than just their actual performance or utterances.143
• Innate Structures: He argued that the human mind is endowed with innate principles, which he termed Universal Grammar, allowing children to acquire language with remarkable speed and facility.53

By treating the mind as a system capable of processing information, Chomsky helped establish cognitive psychology and provided a foundation for the interdisciplinary field of cognitive science.12