Table S1 from Ants resort to heuristics when facing relational-learning tasks they cannot solve

Sequence of odours used for both ‘same’ and ‘difference’ treatments. On each visit, ants encountered a different unique odour pair. The sample odour on the stem had to either be matched to the target odour on one arm (‘same’) or non-matched (‘difference’). This table shows the ‘difference’ treatment, in which reward was placed on the end of the arm with an odour other than the stem (non-match rewarded). In the ‘same’ treatment, the succession of pairs was identical, but reward was on the arm with the same odour as the stem. Half of the ants started with L (left), half with R (right, shown here).