Figure 3.
The finite-state grammar underlying the sequences used in Experiment 1 (left) and 2 (right). The sequence used in Experiment 1 has a large branching factor and a large number of highly similar paths while the grammar underlying Experiment 2 is much simpler. In contrast, the sequence tested in Experiment 1 affords a simple, first-order statistical description, while the sequence tested in Experiment 2 relies entirely on higher-order conditional probabilities. See the introduction for each experiment for a detailed explanation.
