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When learners improve, the temporal change in performance carries information about progress; we know we "got the hang of it" after succeeding on a task we used to fail at. Building on prior work investigating older children's ability to track their performance over time, here we ask whether two-year-olds can track the temporal pattern of their performance outcomes. Children in the Improvement condition experienced 3 failures followed by 3 successes (FFFSSS) whereas children in the Stochastic condition experienced the same number of failures and successes in a seemingly random sequence (SSFFSF). When asked which toy they wanted to show their parent, children were more likely to select the Test Toy over a Control Toy when the temporal sequence of their performance suggested improvement than when it appeared to be random. These results suggest that two-year-olds can reason about their performance over time and use it to guide their future actions.
Authors:
Peter Zhu: Stanford University; Veronica Aranda: Stanford University; Grace E Keene: Stanford University; Hyowon Gweon: Stanford University
