A) Each tree had a range of differently sized oranges. In the group condition, multiple orange were available within each tree for determining which had the largest oranges, overall. In the single condition (not shown), only a randomly selected pair of oranges from different sets of full groups was visible. Both the single-via-single analysis and the group-via-subset analysis were conducted on the same data from the single condition. B) Children (black bars) selected the tree with the largest oranges, overall, more often when the full sets of oranges were visible (shown in the group-via-group analysis) compared to when only a single orange (a subset) was visible in each tree (shown in the group-via-subset analysis). This occurred despite high sensitivity for discriminating individual oranges observed in the single-via-single analysis. Adults (white bars) showed the same pattern. ** represents p < .01. Error bars reflect ±1 SEM (adjusted for within-observer comparisons).