Table 3.

Results of statistical analysis of behavioral data model with 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	55	37.09	<0.0001	1	55	77.40	<0.0001
Digit-length*digit-length	1	55	8.89	0.0043	1	55	6.87	0.0113
Drug (syn 115 v. Placebo)	1	55	1.18	0.2828	1	55	0.96	0.3323
Digit-length*drug	1	55	0.01	0.9377	1	55	0.19	0.6644
Digit-length*digit-length*drug	1	55	2.05	0.1580	1	55	0.26	0.6103