Table 4.

Hierarchical regressions predicting different facets of impulsiveness from ERN amplitude during adolescence, after controlling for age, gender, and the number of trials included in the ERN.

BIS-11	Step 1				Step 2
	Regression excluding the ERN				Regression including the ERN
	B	SE B	β	Adj R2	B	SE B	β	Adj R2	ΔR2
Attentional Impulsiveness				0.06				0.06	0.01
Age in adolescence	0.73	0.31	0.29*		0.82	0.32	0.32*
Gender a	0.01	0.80	<0.01		−0.02	0.80	<−0.01
Quantity of errors	0.04	0.02	0.19		0.03	0.02	0.14
ERN amplitude in adolescence					−0.07	0.07	−0.13
Motor Impulsiveness				<−0.01				0.07	0.09*
Age in adolescence	0.42	0.32	0.17		0.66	0.32	.26*
Gender	−0.32	0.83	−0.05		−0.41	0.80	−0.06
Quantity of errors	−0.01	0.02	−0.07		−0.04	0.02	−0.19
ERN amplitude in adolescence					−0.18	0.07	−0.34*
Non-planning Impulsiveness				0.11*				0.15*	0.05
Age in adolescence	0.59	0.43	0.16		0.85	0.44	0.23
Gender	−3.22	1.12	−0.33**		−3.31	1.10	−0.34**
Quantity of errors	<−0.01	0.03	−0.01		−0.03	0.03	−0.10
ERN amplitude in adolescence					−0.19	0.10	−0.25
Total Score				0.07				0.13*	0.07*
Age in adolescence	1.75	0.82	0.25*		2.33	0.83	0.34**
Gender	−3.52	2.14	−0.19		−3.73	2.07	−0.21
Quantity of errors	0.02	0.06	0.04		−0.04	0.06	−0.07
ERN amplitude in adolescence					−0.44	0.18	−0.31*

Note. B: beta weight; β: standardised beta weight; Adj: adjusted; Δ: change; BIS-11: Barratt Impulsiveness Scale − Version 11; ^a Gender: 1 = male, 2 = female; ^*: p < .05; ^**: p < .01.