The predictive mind

The predictive mind

What insights can experts and survivors share about addiction? Here, the focus shifts to how minds work at a much deeper level, with a curious look at why no two people ever quite share the same experience of the world. Psychologist Bruce Goldstein joins host Lynne Malcolm to unpack the link between brain activity and conscious experience, starting with the idea of qualia – the private, inner flavour of what each person sees, feels or hears.

As he puts it, "Each person's qualia is their own private experience," illustrated through vivid scenes at the Grand Canyon and an eerie case study of a boy in a coma whose brain still reacts to film tension. You’ll hear how nerve impulses – just ions shifting across membranes – somehow give rise to experience, and why this "hard problem of consciousness" has researchers stumped.

Instead, many focus on the so‑called "easy problem": mapping the brain’s shifting networks, like traffic patterns across a busy city, and seeing how they change with tasks, moods and perceptions. Goldstein explains how the brain quietly keeps your visual world stable as your eyes dart around, why we don’t see smeared images, and how prediction sits at the centre of so much mental life.

From reading a sentence about a girl flying a kite, to anticipating the final note in a melody, the brain is constantly guessing what comes next – and firing up when those guesses are wrong. Socially, this predictive knack shows up in theory of mind and mentalising: guessing what others think, want or plan to do, illustrated with the famous Sally‑Anne task and everyday bus‑chasing scenarios.

The conversation finishes with new research frontiers, including psychedelic studies and large‑scale brain networks, while keeping one eye on the mystery that science still can’t crack. If the brain is always predicting, what might it be guessing about your next choice today?