Table 3.

Cluster 2–Cluster 1 differences in transition matrices (%)

From state	To state
	No RE	RE Child	RE Caregiver	RE Both
No RE	− 20.4	29.2	122.9	221.0
RE Child	− 23.3	− 10.1	130.2	142.2
RE Caregiver	− 23.0	15.5	− 1.5	48.7
RE Both	− 31.7	− 17.4	− 2.3	18.4

Computed as $(T{M}_2-T{M}_1)/T{M}_1\times 100\%$

There are four potential states at each point of behavioral time series: No Reaching Event (No RE), Child Reaching Event (RE Child), Caregiver Reaching Event (RE Caregiver), Caregiver and Child Reaching Events happening at the same timepoint (RE Both). Each potential state transition is defined by an entry in the matrix. The value corresponding to each transition is the relative percentage difference between transition probabilities of dyads in Cluster 2 and Cluster 1 referenced to dyads in Cluster 1