Figure 1. Mean rate of gesture production across modalities, per hour dyad spent in close proximity (within 10 m) for three different types of proximity bond.

(1) preferred, reciprocated close proximity bond, where both A to B and B to A dyads had values of close proximity equal or above mean plus half SD (30.3 minutes duration per hour spent in same party); (2) preferred, non-reciprocated close proximity bond, where A to B but not B to A dyads had values of close proximity equal or above mean plus half SD (30.3 minutes duration per hour spent in same party); (3) non-preferred close proximity bond, where A to B dyads had values of close proximity equal or below the mean minus half SD (16.23 minutes duration per hour spent in same party). For the purposes of plotting only, zero values were excluded. The MRQAP regression model included these zero values.