TABLE 3.

Descriptive statistics of the ZAREKI-R sample–clustered by subtests.

	Subgroup 1 (n = 26)						Subgroup 2 (n = 60)
	M	SD	Skewness	Kurtosis	Mix.	Max.	M	SD	Skewness	Kurtosis	Min.	Max.
Intelligence	46.99	6.36	0.47	2.00	38.33	58.33	45.72	5.88	0.08	2.58	30.83	58.33
Reading fluency	45.49	10.32	0.51	2.37	28.67	68.00	40.88	9.37	0.36	4.03	21.33	72.00
Matrix span	46.23	8.82	0.14	2.38	33.00	65.00	45.87	7.13	0.02	2.77	30.00	61.00
Verbal span	48.54	5.43	0.50	2.71	41.00	61.00	45.98	6.32	0.97	3.97	36.00	67.00
Dot enumeration	51.35	10.83	0.52	2.70	33.00	75.00	42.22	8.53	−0.20	3.12	22.00	65.00
Symbolic magnitude comparison	50.15	9.56	0.10	2.11	35.00	68.00	43.77	11.96	0.31	2.40	22.00	69.00
Mixed magnitude comparison	51.77	13.14	0.12	2.15	31.00	75.00	44.02	10.95	0.16	2.56	22.00	71.00
Transcoding	46.73	8.30	−0.38	1.65	32.00	58.00	41.03	9.14	−0.04	1.84	22.00	54.00
Number sets	47.35	8.67	0.49	2.99	32.00	68.00	41.02	6.30	0.18	2.68	28.00	57.00
Number line	48.00	5.58	−0.36	2.06	37.00	57.00	40.30	7.63	0.41	3.48	23.00	63.00
Addition	48.35	6.39	0.42	2.31	39.00	61.00	36.47	4.73	−0.27	2.86	24.00	46.00
Subtraction	44.96	4.89	0.31	2.91	37.00	57.00	37.27	6.20	0.52	2.28	26.00	49.00
Multiplication mixed with place holder tasks	48.62	7.51	−0.10	2.96	33.00	65.00	38.35	7.04	0.13	2.35	25.00	53.00
Attention	47.24	7.53	−0.29	2.00	32.00	57.67	41.68	7.76	−0.04	2.42	22.33	58.00

All variables are T-standardized (mean = 50, SD = 10).