. Author manuscript; available in PMC: 2014 Oct 1.

Published in final edited form as: Dev Psychol. 2012 Dec 17;49(10):1994–2004. doi: 10.1037/a0031200

Table 3.

Correlations among Experimental Tasks and Math Achievement Tests for Grade 6 (above diagonal) and Inline graphic

						Fraction Arithmetic				Executive Function
	Math Achievement (PSSA)	Reading Achievement (PSSA)	Fraction Magnitude Comparison	Number line 0–.1 (PAE)	Number line 0–.5 (PAE)	Correct Strategy Use	Answer Accuracy	Basic Calculation Errors	Whole Number Division	Update (Letter Memory)	Inhibit (Anti-Saccade)
Math Achievement (PSSA)	1	.600^**	.456^**	−.477^**	−.499^**	.164	.234	−.470^**	.466^**	.010	.345^**
Reading Achievement (PSSA)	.745^**	1	.460^**	−.315^*	−.361^**	.351^**	.369^**	−.405^**	.299^*	.206	.149
Fraction Magnitude Comparison	.567^**	.427^**	1	−.493^**	−.318^*	.524^**	.559^**	−.519^**	.418^**	.088	.123
Number line 0–1 (PAE)	−.763^**•	−.651^**•	−.568^**	1	.527^**•	−.266^*	−.295^*	.271^*	−.341^**	−.295^*	−.109
Number line 0–5 (PAE)	−.628^**	−.507^**	−.476^**	.457^**	1	−.325^*	−.343^**	.368^**	−.484^**	−.357^**	−.190
Fraction Arithmetic Correct Strategy	.621^**•	.579^**	.455^**	−.483^**	−.507^**	1	.960^**	−.586^**	.393^**	.256^*	.137
Fraction Arithmetic Answer Accuracy	.615^**•	.577^**	.405^**	−.433^**	−.540^**	.917^**	1	−.626^**	.422^**	.243	.076
Fraction Arithmetic Calculation Errors	−.540^**	−.561^**	−.383^**	.470^**	.353^**	−.493^**	−.635^**	1	−.348^**	−.136	−.230
Whole Number Division	.703^*•	.603^**•	.421^**	−.708^**•	−.488^**	.656^**•	.628^**	−.562^**	1	.287^*	.231
EF: Update (Letter Memory)	.507^**•	.569^**	.306^*	−.550^**	−.457^**	.363^**	.446^**	−.300^*	.392^**	1	.140
EF: Inhibit (Anti-Saccade)	.306^*	.277^*	.228	−.381^**	−.354^**	.248	.265^*	−.332^**	.387^**	.364^**	1

Notes: N=60 per grade (N=56 per grade for PSSA achievement correlations)

p<.05;

^**

p<.01.