Why is consciousness a major challenge for cognitive science?

Consciousness represents a major challenge for cognitive science because it involves phenomenal or "felt" aspects of experience—often described as "what it is like" to have a sensation or emotion—that many philosophers argue cannot be captured solely by the physical properties of the brain and nervous system.1

This challenge is multifaceted:

• Scientific Explanability: Some thinkers contend that consciousness lies beyond the realm of scientific explanation, as physicalist models may fail to account for the subjective nature of conscious experience.1
• Computational Limits: Through the Chinese room argument, philosopher John Searle challenged the idea that conscious mental states, such as understanding, can be reduced to computational processes.1
• Introspection Issues: Historically, attempts to study consciousness via introspection proved difficult, as results were often subjective and inconsistent. Furthermore, research indicates that individuals are frequently mistaken about their own mental processes, suggesting that introspection does not provide the "incorrigible" or privileged access once assumed.2

While cognitive science continues to explore how consciousness might emerge from the interaction of brain areas, it remains a central point of controversy regarding the possibility of a fully scientific theory of the mind.1