*3.1. Methods*

3.1.1. Participants

Forty participants took part in experiment 2 (24 female), recruited from the undergraduate population at the University of Chicago. In total, 20 participants took part in the individual condition, and 20 participants took part in a dyadic condition, in which they were paired with another individual (i.e., 10 dyads). Participants were reimbursed for taking part in the study with either a paymen<sup>t</sup> of USD 10 or one required research course credit. All participants were self-reported "native" speakers of English with no knowledge of ASL (10 participants reported speaking languages in addition to English). A session with one dyad (two participants) was excluded and re-recorded with a new pair of participants due to a technical error in video recording.
