Figure 3

Social contact. Time in social contact is the proportion of time a pair of children were in social contact divided by the time both children were present in the classroom. Social contact is between 0.2 and 2 m and mutual relative orientation < 45°. DD includes both ASD and O/DD. Children in concordant dyads (DD-DD/TD-TD) spent a greater proportion of time in social contact than discordant dyads (DD-TD, p < 0.001), and DD-DD dyads were in social contact less than TD-TD dyads (p < 0.001).