Table 6.

Results of principal components analyses.

Structured Tests			Narrative Accuracy			Narrative Diversity
Component	PC1	PC2		PC1	PC2		PC1	PC2
Proportion of variance	0.60	0.22		0.74	0.19		0.50	0.31
Cumulative variance	0.60	0.81		0.74	0.93		0.50	0.81
Loadings			Loadings			Loadings
SPPT	0.55	−0.24	GS	0.63		Clause	0.68
NAT	0.55	0.27	VM	0.55	0.71	VM	0.44	−0.84
NAVI	0.46	0.62	VAS	0.55	−0.71	VAS	0.59	0.54
ASPT	0.44	−0.69

Note: SPPT = Sentence Production Priming Test from NAVS (Thompson, 2011); NAT = Northwestern Anagram Test (Thompson et al., 2012b); NAVI = Northwestern Assessment of Verb Inflection (Lee & Thompson, 2017); ASPT = Argument Structure Production Task from NAVS; GS = grammatical sentences; VM = verb morphology; VAS = verb-argument structure. BOLD = relatively strong loadings (absolute value > 0.4).