TABLE 5.

Mean reaction times and accuracy for the conflict tasks

											Stroop task
Participant group			Composite picture description task		Lexical decision task						English						Other language (LI)						Flanker task
Aphasia					RT(ms)			Accuracy %			RT(ms)			Accuracy %			RT (ms)			Accuracy %			RT (ms)			Accuracy %
	Age	Raven	English	LI	W	NW	CR	W	NW	CR	N	I	CR	N	I	CR	N	I	CR	N	I	CR	C	I	CR	C	I	CR
Ptl	65	11	12	26	1262	2489	.97	97	80	.18	2286	3572	.56	93	67	.28	1753	2267	.29	93	96	-.03	1016	1024	.01	92	94	-.03
Pt2	47	8	24	25	1450	2190	.51	93	43	.54	892	966	.08	82	71	.14	837	879	.05	96	88	.08	1319	1246	-.06	82	35	.54
Bilingual controls
1	31	10	35	34	898	1011	.13	88	88	.03	667	829	.24	96	100	-.04	656	803	.22	86	92	-.07	703	770	.10	97	94	.03
2	41	11	31	30	986	1232	.25	92	85	.08	913	1105	.21	96	100	-.04	851	953	.12	100	100	0	581	665	.15	98	90	.08
3	40	11	36	35	754	960	.27	100	95	.05	1225	1028	-.16	96	95	.01	894	1014	.13	89	75	.16	586	646	.10	97	99	-.01
4	39	12	37	38	723	763	.06	100	95	.05	704	751	.07	61	54	.11	631	855	.35	82	79	.04	599	662	.10	97	96	.01
5	45	11	51	29	892	989	.11	97	90	.07	859	1026	.20	79	88	-.11	755	948	.26	78	79	-.01	670	814	.22	99	94	.04
6	36	11	46	67	670	759	.13	85	87	-.02	856	703	-.15	100	100	0	871	789	-.09	100	100	0	481	575	.20	90	89	.02
7	28	11	25	69	976	1374	.41	97	90	.07	981	1057	.08	100	100	0	881	1062	.21	100	100	0	490	530	.08	89	89	0
8	59	8	52	52	752	894	.19	88	83	.06	844	992	.17	100	100	0	1175	1237	.05	100	92	.08	659	696	.06	97	96	.01
9	24	12	45	49	814	948	.16	87	93	-.07	770	867	.13	100	100	0	705	797	.13	100	100	0	485	553	.14	100	94	.06
10	24	12	45	51	904	920	.02	97	88	.09	984	1158	.18	100	100	0	885	1058	.20	96	100	0	461	509	.10	100	96	.04
11	24	11	49	37	759	1061	.40	85	83	.02	759	815	.07	100	100	0	909	938	.03	100	100	0	603	695	.15	97	99	-.01
12	26	12	44	50	813	1343	.65	98	83	.15	1364	1265	-.07	100	100	0	1251	1290	.03	100	100	0	555	632	.14	100	94	.06
M	34.8	11	41.4	45.0	828	1021	.23	93	88	.05	911	966	.08	94.0	94.8	-.01	872	979	.14	94.3	93.1	.02	573	646	.13	97	94	.03
SD	10.7	1.1	8.4	13.6	101	201	.18	5.9	4.5	.06	207	173	.14	12.0	13.3	.05	187	764	.72	8.2	P.S	.06	SO. 6	93.0	.05	3.6	3.4	.03
Normal cut off Mono- lingual controls (n = 14)			24.5	18.1	1032	1424	.59	81	80	.16	1324	1312	.36	70.1	68.1	.09	1246	1307	.55	77.8	75.4	.13	734	832	.22	90	87	.09
M	45.0	11			723	805	.11	97	92	.05	739	893	.21	99	98	.01							632	717	.14	99	94	.04
SD	17.1	.7			109	136	.05	1.4	1.8	.03	101	133	.10	3.8	4.4	.04							119	130	.04	1.6	3.9	.04
Age range: 21-69

Mean reaction times and accuracy for the conflict tasks (lexical decision, Stroop and the non-verbal flanker task) for Pt1 and Pt2 and bilingual controls together with their composite picture description scores in English and the first language, L1, age and Raven scores. Monolingual data for the conflict tasks are reported in the final row. Figures in bold for the participants with aphasia indicate the scores beyond the normal cut-off.

RT = reaction time, M = mean, SD = standard deviation; Normal cut off = 2 SD above the normal mean for RT and conflict ratios and below the normal mean for accuracy. W = word, NW = non-word; N = neutral trial, I = incongruent trial; C = congruent trial; CR = conflict ratio –please see text for descriptions.