Table 1. Summary of syntax similarity scores and description of transition behavior quantified by each metric.

Unweighted	Weighted	Unpenalized	Penalized	Description
x		x		Ignores vocalization frequency and novelvocalizations between sessions
x			x	Ignores vocalization frequency, accounts fornovel vocalizations between sessions
	x	x		Accounts for vocalization frequency, ignoresnovel vocalizations between sessions
	x		x	Accounts for vocalization frequency andnovel vocalizations between sessions