Table 3.

Intercorrelations among initial readiness measures and correlations between initial readiness and baseline PDA, RMPI, and DSMS

Variable	IRR	ISA	ISR	ISTS	PDA	RMPI	DSMS
Initial Readiness Ruler (IRR)	−	.43**	.19*	.73**	.30**	.04	.04
Initial staging algorithm (ISA)		−	.05	.47**	.30**	−.05	−.16*
Initial SOCRATES Recognition (ISR)			−	.23**	.10	.62**	.48**
Initial SOCRATES Taking Steps (ISTS)				−	.31**	.00	.01

Notes: PDA = percentage of days abstained from marijuana, last 30 days, as measured by the Timeline Followback Interview; RMPI = Rutgers Marijuana Problem Index; DSMS = total count of Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, marijuana abuse + dependence symptoms; a square root transformation was applied to the RMPI data; ns for the analyses ranged from 168 to 174.

^*p≤.05;

^**p≤.01.