Table 2.

Descriptive statistics of the data.

Age group		CI			FT			Navon GL
		Mean	SD	N	Mean	SD	N	Mean	SD	N
10 years	Male	0.94	0.10	8	0.45	0.17	10	1266.14	790.06	10
	Female	0.91	0.11	9	0.64	0.20	10	1160.65	298.55	9
12 years	Male	0.92	0.11	9	0.73	0.21	8	789.58	547.99	7
	Female	0.83	0.14	10	0.64	0.11	11	839.71	390.00	11
14 years	Male	0.83	0.14	8	0.77	0.14	8	696.94	320.90	8
	Female	0.76	0.08	10	0.89	0.31	10	672.60	459.58	9
16 years	Male	0.78	0.06	8	0.88	0.25	9	655.42	359.96	9
	Female	0.73	0.09	10	1.06	0.25	9	470.92	224.82	10
18 years	Male	0.70	0.08	10	0.81	0.27	9	582.70	266.97	10
	Female	0.73	0.10	9	0.88	0.34	10	529.07	220.04	10
20 years	Male	0.74	0.06	11	1.03	0.14	10	628.25	467.33	10
	Female	0.70	0.08	9	0.90	0.22	10	448.75	190.81	11

In the CI task, D ranged between 1.1 and 0.6, where the easiest level was D = 1.1 followed by more difficult levels up to D = 0.6 (lower scores reflect better performance). In the FT task, corrected performance rate ranged between 0.114 and 1.519 (lower value indicates poorer performance). In the Navon global–local task, the results ranged between 83 and 3239 ms (lower scores indicate better performance).