Table 2:

Statistical contrasts between each PPA subtype and controls by morpheme

	lvPPA	nfavPPA	svPPA
	(N = 16)	(N = 10)	(N = 16)
-s	t(15) = 2.79, p = 0.01	t(9) = 1.60, p = 0.14	t(15) = 3.85, p = 0.002
’s	t(15) = 5.04, p < 0.001	t(9) = 2.34, p = 0.04	t(15) = 8.61, p < 0.001
Noun	t(15) = 2.45, p = 0.03	t(9) = 1.48, p = 0.17	t(15) = 3.82, p = 0.002
Name	t(15) = 3.59, p = 0.003	t(9) = 1.77, p = 0.11	t(15) = 4.25, p = 0.001
Number	t(16) = 2.39, p = 0.03	t(9) = 3.06, p = 0.01	t(16) = 4.02, p = 0.001
Colour	t(15) = 3.42, p = 0.004	t(9) = 1.05, p = 0.32	t(15) = 4.84, p < 0.001
Size	t(15) = 3.98, p = 0.001	t(9) = 2.04, p = 0.07	t(15) = 5.54, p < 0.001
Total	t(15) = 3.78, p = 0.002	t(9) = 2.26, p = 0.05	t(15) = 5.97, p < 0.001

Significant contrasts are bolded. lvPPA=logopenic variant, nfavPPA=non-fluent/agrammatic variant, svPPA=semantic variant. T-tests for targeted morphemes violated the equality of variances assumption (Levene’s Test for Equality of Variances) in all cases. Thus, reported statistics for morphemes are adjusted based on the (Cochran & Cox, 1957) adjustment of the standard error and the (Satterthwaite, 1946) adjustment of the degrees of freedom.