Consciousness science has no single accepted theory. It has a set of rival programmes that disagree about what consciousness is, which systems can have it, and what evidence would settle the question. That disagreement is the reason no one can yet say whether an artificial system is conscious. This page indexes every theory covered on The Consciousness AI, grouped by the family it belongs to, with the prediction each one makes about artificial systems. The lists below update automatically as new articles are published. For where the evidence currently stands, start with the current scientific consensus on AI consciousness, and for the people arguing these positions, see the index of consciousness researchers and where each one stands.
| Theory family | Core claim | Prediction for AI |
|---|---|---|
| Global workspace | Consciousness is information broadcast from a limited workspace to many specialized processors | A system with genuine global broadcast can be conscious. Substrate does not matter |
| Integrated information | Consciousness is intrinsic causal power, measured as phi | Feedforward architectures have near zero phi. Most current AI is ruled out |
| Higher order | A state is conscious when the system represents itself as being in that state | Possible for AI, and testable through metacognitive structure |
| Predictive processing | Consciousness arises from hierarchical prediction and error minimisation | Possible where the system models itself as the cause of its own predictions |
| Recurrent processing | Local recurrent feedback in sensory cortex is sufficient for experience | Feedforward transformers are ruled out. Recurrent architectures are not |
| Biological | Consciousness requires living, self-sustaining metabolic hardware | Silicon systems are ruled out in principle |
| Quantum | Consciousness depends on quantum processes that classical computers cannot reproduce | Classical AI is ruled out |
| Alternative | Consciousness is fundamental, illusory, or otherwise outside the standard framing | Predictions vary widely by position |
The theories do not merely differ in emphasis. They disagree about which physical facts are the relevant ones, which means they disagree about what an experiment should measure. The Cogitate consortium ran an adversarial collaboration between global workspace and integrated information predictions and produced results that neither camp accepted as decisive, which is documented in the adversarial test of IIT against global neuronal workspace.
This project works under functionalist emergentism, which treats consciousness as an emergent property of the universe and is therefore substrate independent. That position is set out in full on the functionalist emergentism page, and the architecture built on it is described under the system architecture.