Parent and peer relationships as longitudinal predictors of adolescent non-suicidal self-injury onset

Table 2 Correlation matrix of NSSI predictors at age 13

	M (SD)	HP	ND	QA	PP	PM	SSC	SSW	POP	PV
HP	8.74 (2.30)	1
ND	7.27 (1.88)	− 0.07	1
QA	11.45 (3.20)	0.42	0.23	1
PP	16.59 (3.21)	− 0.24	− 0.36	− 0.54	1
PM	4.71 (1.17)	0.18	0.21	0.29	− 0.24	1
SSC	11.45 (2.59)	0.10	0.07	0.15	− 0.25	0.15	1
SSW	11.76 (2.91)	0.11	0.13	0.23	− 0.26	0.14	0.56	1
POP	25.99 (5.68)	0.26	0.05	0.23	− 0.21	0.19	0.50	0.58	1
PV	2.70 (3.69)	0.23	− 0.03	0.18	− 0.09	0.12	0.29	0.32	0.45	1
DEP	6.97 (4.47)	0.30	0.06	0.33	− 0.16	0.18	0.20	0.22	0.30	0.40

p < 0.05 for values ≥ |0.05|, p < 0.01 for values ≥ |0.06|, p < 0.001 for values ≥ |0.09|. Correlation matrix for predictors assessed at ages 14, 15, and 16 available upon request from the corresponding author
HP harsh punishment, ND nonviolent discipline, QA (poor) quality of attachment to parent, PP positive parenting, PM (low) parental monitoring, SSC social self-competence, SSW social self-worth, POP (negative) perceptions of peers, PV peer victimization, DEP depression severity

ISSN: 1753-2000