Researchers at Helmholtz Munich have created an artificial intelligence (AI) model named Centaur that can copy human behavior very well. Centaur was trained using a large collection of over ten million decisions from psychological experiments, a field that studies how people think and act. This training helps Centaur make choices in ways that closely match real human decisions. This new tool could help us learn more about how the mind works and improve theories in psychology.
Centaur uses a special dataset called Psych-101, which holds data from 160 behavioral experiments where people decide things in different situations. What makes Centaur special is its ability to predict how people will act, not just in known tasks but also in new situations it has never seen before. It finds common ways people make decisions, adjusts to different contexts, and even guesses reaction times accurately. The researchers say that they have created a tool that allows us "to predict human behavior in any situation described in natural language - like a virtual laboratory.” This could be useful in many areas, like studying old psychological tests or understanding decision-making in health issues such as depression or anxiety.
Centaur: Bridging theory and prediction
Centaur connects two important areas: clear explanations of how people think and the ability to predict their actions. Before, models could do one or the other but not both. Centaur shows where older models fail and suggests ways to make them better. This could lead to new research and practical uses in fields like medicine, environmental science, and social studies.
Next, the researchers want to explore Centaur’s inner workings. They aim to find which patterns link to specific decision-making processes and see if these can show how people process information. They also wonder if these patterns differ between healthy people and those with mental health issues.
The researchers have described the methods and results of this study in a paper published in Nature.