. 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 3.

Study 2: Correlations between Laboratory Measures of Impulsivity (n = 198)

	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	.68^**	.02	.23^**	.25^**	.16^*	.00	−.06
DMT Ratio	---	.05	.24^**	.20^*	.10	.13	−.14
GoStop Ratio 50 msec		---	.72^**	.50^**	.32^**	.04	−.04
GoStop Ratio 150 msec			---	.74^**	.50^**	.05	−.03
GoStop Ratio 250 msec				---	.65^**	.04	.01
GoStop Ratio 350 msec					---	.02	.00
TCIP Proportion Short Responses						---	−.82^**

indicates significance < .05,

^**

indicates significance < .001