Table 3:

Mean percent correct MorGen performance by PPA variant

Morpheme	lvPPA (N = 16)	nfavPPA (N = 9)	svPPA (N = 15)	unclassifiable (N = 4)
Plura-s	71.2(41.3)	79.9(38.1)	59.8(40.0)	78.2(37.2)
Possessive ‘s	41.2(46.5)	64.1(47.2)	25.5(35.9)	44.1(40.0)
Noun	75.5(40.1)	85.0(30.3)	57.6(42.6)	77.1(42.5)
Name	66.2(37.7)	90.9(16.7)	58.0(40.0)	72.1(22.2)
Numeral	72.7(39.1)	61.1(39.3)	53.3(38.8)	93.8(12.5)
Size	60.9(36.2)	75.0(35.2)	43.3(36.9)	59.4(29.1)
Color	65.8(39.0)	94.2(13.8)	48.1(40.0)	60.5(30.5)

Statistics are presented as mean (standard deviation). Variants of primary progressive aphasia (PPA) include semantic variant (svPPA), logopenic variant (lvPPA), and non-fluent agrammatic variant (navPPA). Those who showed characteristics of multiple subtypes resulting in unclear classification at the time of testing are labeled with “unclassifiable PPA.”