Table 3.

Estimated parameters for cannabis model in a school sample of adolescents assessed over 5 years^a.

	Working memory			Perceptual reasoning			Delayed recall memory			Inhibition control
	Estimate	SE	p	Estimate	SE	p	Estimate	SE	p	Estimate	SE	p
Intercept	21.04	1.50	0.00	15.48	0.42	0.00	17.86	0.48	0.00	34.80	3.00	0.00
Time	−6.76	0.97	0.00	1.25	0.27	0.00	−9.58	0.32	0.00	−8.92	1.96	0.00
Time squared	0.83	0.16	0.00	−0.10	0.04	0.02	2.00	0.05	0.00	0.88	0.33	0.01
SES*	0.10	0.08	0.20	−0.06	0.02	0.03	−0.03	0.02	0.16	0.31	0.15	0.04
Gender (female)	1.22	0.61	0.05	0.07	0.19	0.72	0.10	0.16	0.51	1.93	1.16	0.10
Cannabis, B*	0.23	0.37	0.54	−0.18	0.12	0.11	−0.08	0.10	0.42	2.10	0.71	0.00
Cannabis, W*	0.05	0.18	0.79	0.00	0.05	0.92	−0.09	0.06	0.12	−0.40	0.38	0.29
Cannabis, W (lagged)	−0.23	0.18	0.20	0.12	0.05	0.02	0.11	0.06	0.05	−0.13	0.38	0.73
Gender (male) × cannabis, B	0.25	0.49	0.61	−0.09	0.15	0.56	−0.01	0.13	0.93	−0.35	0.96	0.72
Gender (male) × cannabis, W	−0.51	0.25	0.04	−0.05	0.07	0.52	0.08	0.08	0.32	0.02	0.53	0.97
Gender (male) × cannabis, W (lagged)	0.40	0.25	0.12	0.00	0.07	0.98	−0.09	0.08	0.25	0.22	0.54	0.69

^aSignificant effects are indicated by boldface. Performance on working memory and inhibitory control tasks was measured by counting number of errors; a lower score indicates a better performance. *SES, socioeconomic status; B, between-subjects; W, within-subjects. Bold values correspond to significant predictors.