A Preliminary Study of Functional Brain Activation among Marijuana Users during Performance of a Virtual Water Maze Task

Table 2

Clinical and cognitive measures.

	MJ (n = 10)	NU (n = 18)	F	P
PANAS
Positive affect	30.9 ± 6.6	33.9 ± 7.5	1.1	0.29
Negative affect	12.2 ± 3.2	11.7 ± 2.4	0.2	0.66
HAM-A	2.7 ± 2.3	1.5 ± 1.7	2.5	0.12
Mental rotation total score	16.6 ± 4.6	14.7 ± 4.9	1.0	0.33
SBSOD total score^a	4.8 ± 0.7	4.6 ± 1.0	0.2	0.68
WASI IQ	121.3 ± 8.3	120.2 ± 8.9	0.1	0.74

Data represent mean ± standard deviation. MJ: marijuana; NU: nonusers.
PANAS: positive and negative affect scale; HAM-A: Hamilton Anxiety
Scale; SBSOD: Santa Barbara Sense-of-Direction Scale; WASI: Wechsler
Abbreviated Scale of Intelligence. ^aMJ = 8; NU = 14.