Summary of similarity indices for full and ablated versions of the model for multiple properties.

Values indicate the mean similarity index (with SD in parentheses) across the six tasks (Human Visual Search 1, 2, and 3, Human Free Viewing, and Monkey Free Viewing 1, and 2). Highlighted in bold are the values that showed large differences with respect to the full model. These results indicate that altering each of the model modules led to worse correspondence to the experimental properties of return fixations. For each property, the supplementary figures cited in the first column provide similarity indices for each individual task.