Table 2 –

Participants performance on the IFS.

		Healthy controls (full sample) (n = 341)	bvFTD (n = 29)	Paired controls (n = 24)	bvFTD versus paired controls (Cohen’s d)	Stats
Multidimensional model	WM	−.05 (−.09) [.81]	−1.22 (−1.04) [1.06]	.40 (.34) [.47]	−1.91	U = 5.58 p < .001
		{−1.62–1.75}	{−3.39–.17}	{−.66–1.25}
	M.Inh	−.04 (.17) [.75]	−2.09 (−1.86) [1.94]	.26 (.39) [.64]	−1.47	U = 4.90 p < .001
		{−2.81–1.00}	{−6.37–.35}	{−1.96–.93}
	V.Inh	.13 (.19) [.76]	−1.11 (−.83) [1.24]	.76 (.83) [.34]	−1.91	U = 5.69 p < .001
		{−2.15–1.32}	{−3.04–.73}	{−.13–1.32}
	Abs.C	.15 (.09) [.91]	−.61 (−.62) [.91]	1.16 (1.24) [.36]	−2.47	U = 5.80 p < .001
		{−1.36–1.58}	{−1.35–1.01}	{−.02–1.58}
Bifactor model	WM	−.37 (−.11) [.92]	−1.23 (−1.25) [.09]	−1.23 (−1.23) [.10]	.05	U = .13 p = .89
		{−1.50–1.43}	{−2.03–1.17}	{−1.40–1.03}
	M.Inh	−.37 (−.11) [.92]	−2.04 (−1.54) [1.75]	−1.39 (−1.18) [.86]	−.46	U = 1.10 p = .27
		{−5.29–1.04}	{−5.83–.40}	{−4.72–.48}
	V.Inh	−.33 (−.27) [.76]	−1.31 (−1.41) [.81]	−.91 (−.89) [.55]	−.56	U = 2.29 p = .02
		{−3.29–1.32}	{−2.85–.14}	{−1.92–.29}
	Abs.C	.37 (.26) [.88]	−.54 (−.42) [.78]	−.04 (.02) [.36]	−.81	U = 2.77 p = .006
		{−1.56–2.40}	{−1.94–.84}	{−1.30–.46}
	CF	.37 (.26) [.88]	−.53 (−.18) [1.32]	1.53 (1.53) [.49]	−2.00	U = 5.82 p < .001
		{−1.56–2.40}	{−3.02–1.11}	{.56–2.39}
Observed scores	WM	7.36 (8.0) [2.24]	5.83 (6.0) [2.45]	8.58 (8.0) [1.59]	−1.31	U = 4.09 p < .001
		{0–12}	{1–10}	{6–12}
	M.Inh	8.09 (6.0) [1.47]	5.86 (6.0) [2.67]	8.42 (9.0) [1.21]	−1.19	U = 3.88 p < .001
		{0–9}	{0–9}	{4–9}
	V.Inh	4.28 (1.48) [1.31]	2.31 (2) [2.00]	5.12 (5.0) [.74]	−1.80	U = 4.81 p < .001
		{0–6}	{0–6}	{3–6}
	Abs.C	1.55 (1.0) [1.13]	.95 (1.0) [.97]	2.77 (3.0) [.42]	−2.37	U = 5.57 p < .001
		{0–3}	{0–3}	{1.5–3}
	Total	21.28 (22.0) [4.68]	14.95 (16.5) [6.68]	24.90 (25.0) [2.33]	−1.95	U = 5.68 p < .001
		{12–30}	{1–23}	{20–29}

Descriptive statistics are presented as mean (median) [SD] {range}. Factor scores represent the prediction made by the model for each participant in each EF component, as deviation units from the mean of the young group (0 ± 1). Lower scores represent lower predicted performance, and higher scores represent higher predicted performance. Statistical comparison was made through Mann-Witney U tests. In bold: results reaching the statistical threshold (p < .05). Abs.C: abstraction capacity; bvFTD: behavioral variant frontotemporal dementia; CF: common factor; M.Inh: motor inhibition; V.Inh: verbal inhibition; WM: working memory.