Table 2 Mean percentage of Hits, False Alarms (FA), and d’ score for each factor, Age (old and young), Sex (female, male), Difficulty (one box and three boxes) and Direction (clockwise and anticlockwise).

Age	Difficulty	Direction	Mean (Female)			Mean (Male)			p-value from T-test (Female vs. Male)
Age	Difficulty	Direction	% HITS	% FA	d' index	% HIT S	% FA	d' index	HITS	FA	d' index
Young adults	One box	Clockwise	87	08	0.79	95	03	0.92	n.s.	n.s.	n.s.
	One box	Anticlockwise	83	05	0.79	95	03	0.93	n.s.	n.s.	n.s.
	Three boxes	Clockwise	91	05	0.78	97	01	0.93	n.s.	n.s.	n.s.
	Three boxes	Anticlockwise	87	12	0.75	94	04	0.89	n.s.	< 0.050	< 0.050
Old adults	One box	Clockwise	83	12	0.51	83	14	0.45	n.s.	n.s.	n.s.
	One box	Anticlockwise	77	10	0.46	68	10	0.52	n.s.	n.s.	n.s.
	Three boxes	Clockwise	63	44	0.38	62	38	0.46	n.s.	n.s.	n.s.
	Three boxes	Anticlockwise	56	52	0.25	62	40	0.24	n.s.	n.s.	n.s.

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