Gregory's Constructivist Theory of Perception

Richard Gregory (1970) proposed the constructivist theory of perception, which argues that perception is an active, top-down process. Unlike Gibson, Gregory believed that the sensory information reaching the brain is often incomplete or ambiguous, and that the brain must use stored knowledge, past experience, and expectations to construct a meaningful perception of the world.

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Core Ideas of Gregory's Theory

1. Perception is a Construction

Gregory argued that what we perceive is not a direct reflection of reality. Instead, the brain actively constructs our perception by combining sensory information with prior knowledge. He described perception as being like a hypothesis — the brain makes its best guess about what is out there in the world, based on the available evidence.

2. The Role of Inference

Gregory used the term unconscious inference — the brain makes rapid, automatic inferences (conclusions) about what we are seeing, based on past experience. These inferences happen so quickly and automatically that we are not aware of them.