Table 2.

Main effect in the cognitive measurements (cognitive speed and memory performance).

Test	Effect of group	Effect of time of testing	Interaction
Number-connection test	F(3,40) = 6.31, p < 0.05	F(1,40) = 0.01, n.s.	F(3,40) = 0.125, n.s.
Number–symbol test	F(3,39) = 4.72, p < 0.01	F(l,39) = 1.56, n.s.	F(3,39) = 0.86, n.s.
Digit-span test	F(3,40) = 1.5, n.s.	F(l,40) = 0.22, n.s.	F(3,40) = 1.6, n.s.
Figure test	F(1,38) = 1.63, n.s.	F(3,38) = 1.01, n.s..	F(3,38) = 0.74, n.s.
Block tapping test	F(1,40) = 1.03, n.s.	F(1,40) = 1.03, n.s.	F(3,40) = 0.85, n.s.