Table 3.

The role of popularity norm combinations in the strength of friendship selection, maintenance and socialization related to prosocial and aggressive behavior within the classroom

	Prosocial popularity norm classrooms				Mixed popularity norm classrooms				Aggressive popularity norm classrooms
Parameters	η	sd(η)	CI	p	η	sd(η)	CI	p	η	sd(η)	CI	p
Prosocial behavior
Effect of prosocial behavior on nominations received	0.38	0.08	0.26 to 0.50	>0.99	0.36	0.04	0.29 to 0.43	>0.99	0.41	0.04	0.34 to 0.50	>0.99
Squared effect of prosocial behavior on nominations received	−0.09a	0.07	−0.20 to 0.02	0.14	−0.10a	0.02	−0.15 to −0.06	<0.01	−0.17b	0.04	−0.26 to −0.09	<0.01
Effect of prosocial behavior on nominations given	−0.65a	0.05	−0.73 to −0.55	<0.01	−0.38b	0.03	−0.44 to −0.33	<0.01	−0.36b	0.04	−0.43 to −0.26	<0.01
Squared effect of prosocial behavior on nominations given	0.20a	0.07	0.08 to 0.36	>0.99	0.14a	0.04	0.08 to 0.23	>0.99	−0.04b	0.05	−0.13 to −0.05	0.19
Selection based on similarity in prosocial behavior	0.15	0.09	0.02 to 0.29	0.98	0.06	0.06	−0.05 to 0.16	0.80	0.16	0.05	0.06 to 0.27	>0.99
Maintenance based on similarity in prosocial behavior	0.40a	0.13	0.20 to 0.63	>0.99	0.14ab	0.06	0.05 to 0.25	>0.99	0.10b	0.05	0.00 to 0.21	0.97
Prosocial ego * aggressive alter (prosocial adolescents select aggressive friends)	0.13a	0.03	0.07 to 0.19	>0.99	0.04ab	0.03	0.00 to 0.10	0.98	−0.01b	0.03	−0.06 to 0.04	0.41
Influence of friends’ prosocial behavior on adolescents’ prosocial behavior	0.07	0.15	−0.24 to 0.36	0.66	0.35	0.13	0.12 to 0.61	0.99	0.20	0.18	−0.13 to 0.61	0.88
Adolescent’ prosocial behavior: effect of aggression	−0.12	0.09	−0.29 to 0.03	0.09	−0.04	0.06	−0.16 to 0.08	0.25	−0.16	0.10	−0.32 to 0.04	0.06
Influence aggressive friends on adolescents’ prosocial behavior (eval)	−0.22	0.35	−1.09 to 0.28	0.28	−0.38	0.34	−1.13 to 0.23	0.11	−0.66	0.32	−1.41 to −0.16	<0.01
Influence aggressive friends on adolescents’ prosocial behavior (endow)	−0.25	0.61	−1.44 to 1.10	0.32	0.19	0.61	−0.96 to 1.39	0.63	0.96	0.58	−0.08 to 2.12	0.96
Aggression
Effect of aggression on friendship nominations received	−0.04	0.04	−0.12 to 0.03	0.19	−0.02	0.02	−0.06 to 0.03	0.16	0.00	0.03	−0.06 to 0.05	0.48
Squared effect of aggression on friendship nominations received	0.00	0.03	−0.06 to 0.06	0.51	−0.02	0.02	−0.06 to 0.03	0.16	−0.03	0.03	−0.09 to 0.03	0.21
Effect of aggression of friendship nominations given	−0.03	0.04	−0.12 to 0.04	0.25	−0.04	0.03	−0.09 to 0.01	0.04	−0.07	0.03	−0.12 to −0.01	<0.01
Squared effect of aggression of friendship nominations given*/Superscript>	−0.20	–	–	–	-0.01	0.03	−0.06 to 0.04	0.35	0.11	0.04	0.04 to 0.19	>0.99
Selection based on similarity in aggression	0.03	0.04	−0.03 to 0.11	0.81	0.08	0.03	0.01 to 0.15	0.99	0.03	0.04	−0.03 to 0.10	0.71
Maintenance based on similarity in aggression	0.34	0.08	0.21 to 0.53	>0.99	0.30	0.04	0.22 to 0.39	>0.99	0.19	0.05	0.09 to 0.28	>0.99
Aggressive ego * prosocial alter: aggressive adolescents select prosocial friends	0.02	0.03	−0.06 to 0.07	0.78	0.04	0.03	−0.02 to 0.09	0.92	0.01	0.03	−0.05 to 0.07	0.62
Influence of friends’ aggression on adolescents’ aggression	−0.01	0.13	−0.27 to 0.25	0.44	0.62b	0.10	0.44 to 0.85	>0.99	0.66b	0.12	0.43 to 0.92	>0.99
Adolescent’ aggressive behavior: effect of prosocial behavior	−0.15	0.12	−0.45 to 0.04	0.09	0.20	0.07	0.07 to 0.32	>0.99	−0.20	0.17	−0.56 to 0.09	0.09
Influence prosocial friends on aggression adolescent (eval)	0.53	0.29	0.05 to 1.12	0.99	0.15	0.24	−0.28 to 0.63	0.71	0.31	0.48	−0.49 to 1.46	0.73
Influence prosocial friends on aggression adolescent (endow)	−0.34	0.49	−1.38 to 0.54	0.25	0.00	0.46	−0.92 to 0.81	0.50	0.14	0.88	−1.76 to 1.51	0.63

^*Superscript>This effect had to be fixed in prosocial classrooms to reach convergence criteria. Results with the fixed effect were similar to results with non-fixed effect. Parameters with different superscripts differ significantly from each other