Table 2.

Results of statistical analysis of behavioral data model without interactions.

Effect	Type III tests of fixed effects
	IMT				DMT
	Num DF	Den DF	F value	Pr > F	Num DF	Den DF	F value	Pr > F
Digit-length	1	57	37.09	<0.0001	1	57	77.40	<0.0001
Digit-length*digit-length	1	57	8.89	0.0042	1	57	6.87	0.0112
Drug	1	57	0.27	0.6044	1	57	0.47	0.4946