. 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 4.

Study 2: Factor Structure of Three Laboratory Behavioral Impulsivity Measures (n = 198)

	Factor
Dependent Variables	1	2	3
IMT Ratio	.222	.026	.903^*
DMT Ratio	.199	.143	.764^*
GoStop Ratio 50 msec	.669^*	.045	.046
GoStop Ratio 150 msec	.927^*	.047	.278
GoStop Ratio 250 msec	.846^*	.012	.289
GoStop Ratio 350 msec	.604^*	.004	.181
TCIP Proportion of Short Choices	.049	.919^*	.070
TCIP Consecutive Long Choices	−.021	−.895^*^†	−.108

denotes factor loading > |.6|

^†

denotes negative factor loading reflecting fewer TCIP Consecutive Long Choices, indicating greater impulsivity.