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Description: The present study points to several potentially universal principles of human communication. Pairs of participants, sampled from culturally and linguistically distinct societies (Western and Japanese, N=108: 16 Western-Western, 15 Japanese-Japanese and 23 Western-Japanese dyads) played a dyadic communication game in which they tried to communicate a range of experimenter-specified items to a partner by drawing, but without speaking or using letters or numbers. This paradigm forced participants to create a novel communication system. A range of similar communication behaviors were observed among the within-culture groups (Western-Western and Japanese-Japanese) and the across-culture group (Western-Japanese): they (1) used iconic signs to bootstrap successful communication, (2) addressed breakdowns in communication using other-initiated repairs, (3) simplified their communication behaviour over repeated social interactions and (4) aligned their communication behaviour over repeated social interactions. While the across- culture Western-Japanese dyads found the task more challenging, and cultural differences in communication behaviour were observed, the same basic findings applied across all groups. Our findings, which rely on two distinct cultural and linguistic groups, offer preliminary evidence for several universal principles of human communication.