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. Author manuscript; available in PMC: 2009 Oct 5.
Published in final edited form as: Psychol Addict Behav. 2008 Sep;22(3):362–371. doi: 10.1037/0893-164X.22.3.362

Table 1.

Reliability of the URICA, SOCRATES and RCQ

Subscale Items M SD Coefficient
alpha
Mean item-total
correlation
URICA:
(n = 293)
P 7 2.27 0.96 .82 .56
C 7 4.37 0.65 .87 .66
A 7 3.90 0.85 .90 .70
M 7 3.94 0.76 .81 .54
SOCRATES:
(n = 377)
P 3 7.25 3.66 .60 .42
C 4 14.32 3.45 .40 .22
D 4 16.52 3.16 .51 .33
A 4 15.51 3.67 .65 .44
M 4 14.97 3.18 .32 .17
RCQ:
(n = 239)
P 4 −3.49 4.11 .68 .47
C 4 5.08 3.19 .65 .43
A 4 2.41 4.93 .89 .76

Note. P = precontemplation; C = contemplation; D = determination; A = action; M = maintenance.