Table 3.

Dosage and other treatment parameters for participants who received less intensive training and no booster phase (LRT1 protocol) and those who received more intensive training and a booster phase (LRT2 protocol).

Protocol	Treatment targets	Dose (teaching episodes per session)	Dose form	Criterion for advancement to new set of items	Session duration/frequency	Homework	Phase 1 intervention duration (varied by participant)	Booster phase (Phase 2)	Average total hours of intervention (varied by participant; Phase 1 + 2)
LRT1 (n = 10)	4 sets of 5 words = 20	Approximately one trial a per word per session (5 words total)	Lexical retrieval cascade	80% correct on current set	One 1-hr session per week	CART: approximately 15 min per day = 1.75 hr/week	M = 4.7 sessions/weeks	None	Phase 1: M = 4.7 hr + 8.2 hr homework Phase 2: N/A
LRT2 (n = 8)	8 sets of 5 words = 40	Approximately one trial per word per session (5 words total)	Lexical retrieval cascade	100% correct on current set	Two 1-hr sessions per week	CART: Approximately 15 min per day = 1.75 hr/week	M = 11.4 sessions over 5.6 weeks	At 3 months post-treatment: 2 hr/week for 4 weeks = 8 hr	Phase 1: M = 11.4 hr of treatment + 9.8 hr homework Phase 2: M = 8 hr of treatment + 7 hr homework

Note. LRT = Lexical Retrieval Training; CART = Copy and Recall Treatment; N/A = not applicable.

^a Note that one trial involves completion of the full hierarchy described in Table 2, which provides multiple opportunities to produce/rehearse the target word form.