Table 6. Results from the test-retest study (consistency two way mixed single intraclass correlation coefficient).

	Subtest scores Mean (standard deviation)			ICC
	Trial 1	Trial 2	Trial 3	2 trials	3 trials
Word categories task	14.81 (5.69)	15.06 (5.11)	15.80 (4.96)	0.797	0.836
Opposite task	30.80 (22.94)	32.06 (21.87)	34.18 (20.30)*	0.754	0.814
Visual memory task II	13.40 (3.01)	13.27 (2.91)	14.31 (3.29)	0.700	0.790
Attention task II	21.97 (8.78)	23.68 (8.50)	24.54 (7.40)	0.406	0.547
Sequences	11.28 (5.61)	10.96 (5.53)	11.31 (5.72)	0.795	0.855
Calculus task	19.64 (9.67)	20.35 (9.08)	20.52 (9.54)	0.847	0.880
Puzzles	4.97 (3.82)	5.04 (2.23)	5.02 (2.42)	0.610	0.768
Written comprehension	14.01 (5.18)	14.05 (3.78)	14.92 (3.61)*	0.660	0.811

^*Statistically significant difference between trials 2 and 3 in Student’s T test for related samples (p < 0.05).