Table 1.

Mean UFOV2 and UFOV3 scores for Met/-carriers and Val/Val homozygous individuals for the pre- and post-test assessment, and effect sizes (Δ).

	Met/-carriers (n = 20)		Val/Val homozygous (n = 40)
	UFOV2	UFOV3	UFOV2	UFOV3
Experimental group
Pre-test	164 (32)	277 (27)	178 (27)	267 (21)
Post-test	168 (25)	308 (25)	78 (21)	248 (19)
Δ	+4	+31	−100*	−19
Control group
Pre-test	196 (66)	265 (44)	144 (33)	277 (24)
Post-test	126 (52)	242 (40)	114 (26)	199 (22)
Δ	−70	−23	−30	−78

SE in parentheses. Note that lower scores indicate better performance. Significant group difference; *p < 0.05.