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).

用于「匹配」与「非匹配」两组实验处理的气味序列。每次实验试次中，蚂蚁都会接触一组全新的独有气味对。位于中央干（stem）的样本气味，需与单侧选择臂（arm）上的目标气味构成匹配（对应「匹配组」处理）或非匹配（对应「非匹配组」处理）关系。本表格呈现「非匹配组」处理方案：奖励被放置在气味与中央干样本气味不一致的选择臂末端（即非匹配的选择臂将获得奖励）。在「匹配组」处理中，气味对的呈现顺序与非匹配组完全一致，但奖励被放置在气味与中央干样本气味相同的选择臂末端。半数实验蚂蚁从左侧（L）开始试次，另一半从右侧（R，即本表格所展示的右侧）开始试次。