Table 2.

Treatment parameters.

Treatment parameter	Definition	Specification for current VAULT protocol
Dose	The action(s) in treatment that produce(s) change for a given target	The clinician's verbal model of the target word in a nontelegraphic, grammatical utterance
Dose number	The number of doses per target per session	Higher dose number condition: 90 teaching episodes (270 doses:3 words)	Lower dose number condition: 45 teaching episodes (270 doses:6 words)
Total number of doses	The number of doses across all targets per session	270 doses per session for all target words combined
Dose rate	The total number of doses that occur within a given unit of time	Nine doses per minute (270 doses/30 min)
Dose form	The procedure used to administer the dose	Input-based, focused stimulation procedures using varied linguistic contexts, a variety of different activities, and no requirement for child productions
Treatment context	The setting or context in which the treatment is provided	In a child-friendly clinic room that includes the child, clinician, scorekeeper, and family members
Number of targets	The number of different targets that will be addressed in a given session	Three different target words versus six different target words
Session frequency	The daily, weekly, or monthly schedule of treatment sessions	Two times per week
Session duration	The duration of an individual session	30 min per session
Total intervention duration	The total number of days, weeks, or months the intervention is provided	16 sessions, with an average of two sessions per week, for an average of 8 weeks of treatment
Cumulative treatment intensity	Total Number of Doses × Session Frequency × Total Intervention Duration	270 × 2× week × 8 weeks = 4,320

Note. The creation of this table was inspired by the work of Warren et al. (2007). While some of the terms and definitions are identical to theirs, others are new or modified to fit a broader range of treatment scenarios. VAULT = Vocabulary Acquisition and Usage for Late Talkers.