Materialism claims that:

Materialism is a philosophical stance asserting that only matter exists and that all phenomena, including thoughts, emotions, and consciousness, can ultimately be explained in terms of physical processes and interactions. This view rejects the notion of non-physical entities, suggesting that everything we perceive, including mental states, originates from material substances.

In the context of psychology, materialism implies that understanding human behavior and mental processes should focus on biological and physical explanations. This perspective has significant implications for how we explore consciousness, mental disorders, and cognitive functions, prioritizing neurobiological factors over metaphysical interpretations.

The other concepts hint at dualistic or idealistic perspectives: the idea that only the mind exists points toward idealism; claiming both mind and matter exist equally suggests a dualistic framework. Claiming consciousness is an illusion aligns with certain interpretations of materialism but does not capture the broader essence of the materialist view that centers exclusively on physical reality.