Imitation recognition in great apes

testing behaviour in apes as behavioural patterns which were enacted while facing E, if they fell outside of the described repertoire of the species (for example, testing poses; see Figure ), or were combined in non-standard sequences (testing sequences) or uncharacteristically long bouts of repetitions (behaviour repetitions). Out of 46 coded bouts of testing behaviour, four were testing poses, zero testing sequences and 42 behaviour repetitions (for detailed Supplement Experimental procedures, see the Supplemental data available on-line with this issue). Apes demonstrated more testing behaviours in conditions in which: E acted synchronous to their actions, compared to a two second delay; E repeated the apes’ action, compared to responding with a different action; and E repeated the apes’ action at the same time, hence matching timing and form of his actions to the apes’ actions Imitation recognition in great apes