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• Scientists created an AI called Centaur that can predict human behavior across any psychological experiment with unprecedented accuracy• The AI outperformed decades-old specialized models and successfully predicted behavior in completely new scenarios it had never seen before• Centaur’s internal workings became more aligned with human brain activity just by learning to predict our choices, potentially revolutionizing our understanding of cognition
MUNICH — An artificial intelligence system can now predict your next move before you make it. We're not just talking about whether you'll click "buy now" on that Amazon cart, but rather how you’ll navigate complex decisions, learn new skills, or explore uncharted territory.
Researchers have developed an AI called Centaur that accurately predicts human behavior across virtually any psychological experiment. It even outperforms the specialized computer models scientists have been using for decades. Trained on data from more than 60,000 people making over 10 million decisions, Centaur captures the underlying patterns of how we think, learn, and make choices.
"The human mind is remarkably general," the researchers write in their paper, published in Nature. "Not only do we routinely make mundane decisions, such as choosing a breakfast cereal or selecting an outfit, but we also tackle complex challenges, such as figuring out how to cure cancer or explore outer space."
An AI that truly understands human cognition could revolutionize marketing, education, mental health treatment, and product design. But it also raises uncomfortable questions about privacy and manipulation when our digital footprints reveal more about us than ever before.
How Scientists Built a Digital Mind Reader AI
The research team started with an ambitious goal: create a single AI model that could predict human behavior in any psychological experiment. Their approach was surprisingly straightforward but required massive scale.
Scientists assembled a dataset called Psych-101 containing 160 experiments covering memory tests, learning games, risk-taking scenarios, and moral dilemmas. Each experiment was converted into plain English descriptions that an AI could understand.
Rather than building from scratch, researchers took Meta's Llama 3.1 language model (the same type powering ChatGPT) and gave it specialized training on human behavior. They used a technique that allows them to modify only a tiny fraction of the AI's programming while keeping most of it unchanged. The entire training process took only five days on a high-end computer processor.
Centaur Dominates Traditional Cognitive Models
When tested, Centaur completely crushed the competition. In head-to-head comparisons with specialized cognitive models that scientists spent decades perfecting, Centaur won in almost every single experiment.
The real breakthrough came when researchers tested Centaur on completely new scenarios. The AI successfully predicted human behavior even when the experiment’s story changed (turning a space treasure hunt into a magic carpet adventure), when the structure was modified (adding a third option to a two-choice task), and when entirely new domains were introduced (logical reasoning tests that weren’t in its training data).
Centaur could also generate realistic human-like behavior when running simulations. In one test involving exploration strategies, the AI achieved performance comparable to actual human participants and showed the same type of uncertainty-guided decision-making that characterizes how people behave.
Neural Alignment: Centaur Mimics Human Brain Activity
In a surprising discovery, Centaur's internal workings had become more aligned with human brain activity, even though it was never explicitly trained to match neural data. When researchers compared the AI's internal states to brain scans of people performing the same tasks, they found stronger correlations than with the original, untrained model.
The real breakthrough came when researchers tested Centaur on completely new scenarios. The AI successfully predicted human behavior even when the experiment’s story changed (turning a space treasure hunt into a magic carpet adventure), when the structure was modified (adding a third option to a two-choice task), and when entirely new domains were introduced (logical reasoning tests that weren’t in its training data).
Centaur could also generate realistic human-like behavior when running simulations. In one test involving exploration strategies, the AI achieved performance comparable to actual human participants and showed the same type of uncertainty-guided decision-making that characterizes how people behave.
Neural Alignment: Centaur Mimics Human Brain Activity
In a surprising discovery, Centaur's internal workings had become more aligned with human brain activity, even though it was never explicitly trained to match neural data. When researchers compared the AI's internal states to brain scans of people performing the same tasks, they found stronger correlations than with the original, untrained model.
Learning to predict human behavior apparently forced the AI to develop internal representations that mirror how our brains actually process information. The AI essentially reverse-engineered aspects of human cognition just by studying our choices.
The team also demonstrated how Centaur could accelerate scientific discovery. They used the AI to analyze human behavior patterns, leading to the discovery of a new decision-making strategy that outperformed existing psychological theories.
"We've created a tool that allows us to predict human behavior in any situation described in natural language – like a virtual laboratory," says lead author Marcel Binz in a statement.
Please go to StudyFinds to continue reading.
Please go to StudyFinds to continue reading.
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