Step

Predictor

R²

ΔR²

B

β

VIF

1

classmate relationships

0.18***

0.18

−12.95***

−0.42

1.00

2

classmate relationships

0.22***

0.04

−11/83***

−0.38

1.04

Friction

4.53**

0.20

1.04

3

classmate relationships

0.24***

0.02

−9.14***

−0.30

1.04

Friction

3.80*

0.17

1.08

teacher-student relationships

−3.42*

−0.18

1.47