TABLE 1.

Designs for investigating three types of outcome of SentenceShaper use

Aided Effects Design
Phase 1	SentenceShaper training, topic set x
Phase 2.	Unaided sample, topic set z	} counter balanced
	Aided sample, topic set z
Treatment Effects Design
Phase 1	Unaided sample, topic set z
Phase 2	SentenceShaper treatment, topic sets x & y
Phase 3	Unaided sample, topic set z
Current Design
Phase 1	SentenceShaper training, topic set x
Phase 2	Unaided practice, topic set z
Phase 3	Unaided sample, topic set z	] 3 vs 4 Aided Effects	} 3 vs 5 Topic-specific Carryover
Phase 4	Aided sample, topic set z
Phase 5	Post-SSR Unaided sample, topic set z

Key comparisons are shown in bold. Numbers designate the sequence of phases in each design. Letter indices are used to indicate whether the same or different topics are narrated across phases; Topic set x ≠ y ≠ z.