. Author manuscript; available in PMC: 2010 Jun 8.

Published in final edited form as: Addict Disord Their Treat. 2009 Jun 1;8(2):61–73. doi: 10.1097/ADT.0b013e318172e488

Table 1.

Study 1: Correlations between Laboratory Measures of Impulsivity (n = 204)

	DMT Ratio	GoStop Ratio 50 msec	GoStop Ratio 150 msec	GoStop Ratio 250 msec	GoStop Ratio 350 msec	TCIP Proportion Short	TCIP Most Consecutive Long

Dependent Variables	r	r	r	r	r	r	r
IMT Ratio	.71^**	.11	.21^*	.31^**	.32^**	−.12	.09
DMT Ratio	---	.09	.15	.26^**	.25^**	−.13	−.07
GoStop Ratio 50 msec		---	.74^**	.53^**	.36^**	.04	−.07
GoStop Ratio 150 msec			---	.78^**	.59^**	−.10	.01
GoStop Ratio 250 msec				---	.78^**	−.02	−.05
GoStop Ratio 350 msec					---	−.03	−.07
TCIP Proportion Short Responses						---	−.81^**

indicates significance < .05,

^**

indicates significance < .001