experiment with 743 subjects whether small-scale, seemingly negligible, events also affect the formation of risk preferences. In … line with a reinforcement learning model, we find that subjects who won a random lottery took significantly more risk in a … second lottery almost a year later. The same pattern emerges in another experiment with 136 subjects where the second lottery …

; promotion ; firing ; contract ; experiment ; learning … three mechanisms with the appropriate distribution of prizes. We test the model's predictions in a laboratory experiment and … behavior in all mechanisms is consistent with basic directional and reinforcement learning. -- tournament ; reward ; punishment …

. The results show that reinforcement learning leads to dynamics similar to those observed in standard public goods games … explained by reinforcement learning. According to our estimates, learning only accounts for 41 percent of the decay in …, differ strongly from the learning dynamics, while a learning model estimated from the limited information treatment tracks …

paradigmatic instance of observational learning. There are three players, arranged in sequence, each of whom wins a fixed price if … learning ; error cascades …

algorithms. This paper describes the "evtree" package, which implements an evolutionary algorithm for learning globally optimal … similar and most of the time better results compared to the recursive algorithms "rpart" and "ctree". -- machine learning …