The successor representation subserves hierarchical abstraction for goal-directed behavior
Fig 6
(A) Euclidean distances (normalized) for different pairs of paintings, grouped by whether they were part of the same community and directly connected (community-connected) or not (community-boundary), or whether they were directly connected but not part of the same community (bridge), or not connected and not part of the same community (unrelated). Orange dots with error bars represent mean with 95% standard error. (B) Regression coefficients of the free sort regression. Density plot shows the full posterior distribution of the population mean, with orange lines indicating the 95% highest density interval. Dots represent individual participant posterior means. Note that the “community” effect captures both “community-connected” and “community-boundary” effects as shown in A, and that the “boundary” effect captures their difference. (C) Effects that quantify bias induced by community structure. The “community-direct” effect only investigated directly connected rooms, and asked whether paintings of the same community (community-connected in A) were placed closer together than those of different communities (bridge in A). The “community-indirect” effect is analogous, but investigating pairs of rooms that had a minimal distance of one intermediate room. This corresponds to “community-boundary” paintings in A, and a subset of “unrelated” paintings.