. Author manuscript; available in PMC: 2009 Jan 19.

Published in final edited form as: Psychol Addict Behav. 2008 Dec;22(4):563–569. doi: 10.1037/a0013020

Table 3.

Correlations Between Δ Expectancies and Δ Intentions by Group Status (N = 1,344)

Variable	Y1 Nonuser → Y2 Nonuser	Y1 Nonuser → Y2 User	Z test^a
Δ Damage my brain^b	.06^*	.15^*	1.16
Δ Lose my friends’ respect^b	.12^***	.17^*	0.66
Δ Have a good time with my friends	.07^*	.18^**	1.43
Δ Be more creative and imaginative	.10^***	.14	0.52
Δ Be acting against my moral beliefs^b	.03	.35^***	4.30^***
Δ Mess up my life^b	.13^***	.39^***	3.60^***
Δ Do worse in school^b	.11^***	.42^***	4.32^***
Δ Lose my ambition^b	.09^***	.32^***	3.10^**

Test of difference between two independent correlations.

Reversed so that positive change score represents a shift to perceiving marijuana as less harmful.

p < .05.

^**

p < .01.

^***

p < .001.