. Author manuscript; available in PMC: 2019 Mar 1.

Published in final edited form as: J Exp Child Psychol. 2018 Mar;167:388–403. doi: 10.1016/j.jecp.2017.11.013

Table 2.

Correlations Among Preschool Variables

Variables	1	2	3	4	5	6	7	8	9	10	11	12
1. Age (preschool)	–
2. Age (1^st grade)	.81^***	–
3. Gender	−.10	−.08	–
4. Minority Status	−.06	−.06	.04	–
5. Income-to-Needs Ratio	.09	.09	.09	−.28^***	–
6. Mean Response Time	−.06	.06	.04	−.18^**	.16^*	–
7. Attentional Fluctuations	−.15^*	−.17^*	−.12	.33^***	−.33^***	−.52^***	–
8. Task accuracy	.25^***	.20^**	.20^**	−.26^***	.24^***	.18^*	−.77^**	–
9. Cognitive Flexibility	.20^**	.13	.07	−.19^**	.22^**	.02	−.29^**	.33^***	–
10. Math Readiness	.35^***	.29^***	.03	−.32^***	.31^***	.03	−.40^**	.48^***	.45^***	–
11. Reading Readiness	.24^***	.14^*	.10	−.05	.28^***	.03	−.29^**	.37^***	.28^***	.55^***	–
12. 1^st Grade Academic Performance	−.01	−.04	.09	−.18^*	.19^*	.07	−.28^**	.26^***	.21^**	.49^***	.43^***	–

Note. Gender: 1 = female; Minority: 1 = minority. For attentional fluctuations, higher scores indicate greater fluctuations in attentional control.

p < .05,

^**

p < .01,

^***

p < .001