The question “How can humans learn efficiently to make decisions in a complex, dynamic, and uncertain environment” is still a very open question. We investigate what effects arise when feedback is given in a computer-simulated microworld that is controlled by participants. This has a direct impact on training simulators that are already in standard use in many professions, e.g., for flight simulators for pilots, and a potential impact on a better understanding of human decision making in general. Our study is (...) based on a benchmark microworld with an economic framing, the IWR Tailorshop. N=94 participants played four rounds of the microworld, each 10 months, via a web interface. We propose a new approach to quantify performance and learning, which is based on a mathematical model of the microworld and optimization. Six participant groups receive different kinds of feedback in a training phase, then results in a performance phase without feedback are analyzed. As a main result, feedback of optimal solutions in training rounds improved model knowledge, early learning, and performance, especially when this information is encoded in a graphical representation. (shrink)

Many situations require people to acquire knowledge about, and learn how to control, complex dynamic systems of inter-connected variables. Numerous studies have found that most problem solvers are unable to acquire complete knowledge of the underlying structure of a system through an unguided exploration of the system variables; additional instruction or guidance is required. This paper examines whether providing structural information following an unguided exploration also improves control performance, and the extent to which any improvements are moderated by problem solvers’ (...) fluid intelligence. A sample of 98 individuals attempted to discover the underlying structure of a computer-simulated complex dynamic system. After initially controlling the system with their limited knowledge, half of the sample received guidance concerning the actual underlying structure of the system. All participants then controlled the system again. In contrast to the results of previous studies, guidance did result in immediate improvements in control performance. Fluid intelligence moderated the extent to which problem solvers benefited from structural information. These results indicate that guidance in the form of structural information is critical in promoting knowledge and control over complex and dynamic systems. (shrink)