Table 2.

Cross-sectional and Longitudinal Correlations between Main Study Variables

Variable	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1. Gender
2. Single Parent	−0.01
3. Free School Milk	0.13*	0.41**
4. Age	−0.01	−0.10	−0.03
5. CU Traits Time 1	−0.17*	−0.04	0.06	0.03
6. CU Traits Time 2	−0.33**	0.04	0.05	0.09	0.46**
7. AB Time 1	−0.22**	0.13	0.10	0.10	0.20**	0.20**
8. AB Time 2	−0.21**	0.15*	−0.01	0.05	0.18**	0.30**	0.59**
9. Reward Strategies Time 1	0.10	−0.04	−0.03	−0.11	−0.20**	−0.20**	−0.07	−0.18**
10. Reward Strategies Time 2	0.05	−0.07	−0.01	−0.09	−0.19**	−0.31**	−0.03	−0.16*	0.41**
11. Harsh Discipline Time 1	−0.11	0.03	−0.00	0.21**	0.09	0.16*	0.37**	0.27**	−0.25**	−0.08
12. Harsh Discipline Time 2	−0.08	−0.11	−0.14*	0.31**	0.08	0.13	0.30**	0.28**	−0.12	−0.11	0.53**
13. Academic Motivation Time 1	0.15*	−0.07	0.02	−0.05	−0.44**	−0.34**	−0.29**	−0.28**	0.20**	0.20**	−0.19**	−0.21**
14. Academic Motivation Time 2	0.15*	−0.05	0.02	−0.24**	−0.27**	−0.44**	−0.22**	−0.26**	0.16**	0.21**	−0.27**	−0.27**	0.66**
15. School Engagement Time 1	0.24**	−0.10	−0.01	−0.13	−0.58**	−0.48**	−0.38**	−0.36**	0.33**	0.31**	−0.29**	−0.27**	0.74**	0.55**
16. School Engagement Time 2	0.22**	−0.10	−0.01	−0.22**	−0.36**	−0.55**	−0.34**	−0.42**	0.27**	0.33**	−0.27**	−0.29**	0.59**	0.73**	0.67 **

CU traits Callous-unemotional traits, AB Antisocial behavior. *p < 0.05. **p < 0.01