Table 4.

Mean marginal estimates for ΔERN and ΔPe.

VARIABLES	ΔERN (FCz)		ΔPe (Pz)
	(1)	(2)	(3)	(4)
Child age	0.777	0.643	−0.180	−0.020
	(1.289)	(1.334)	(1.870)	(1.962)
Kindergartena	1.121	1.019	−2.449	−2.587
	(1.878)	(1.902)	(2.725)	(2.796)
First gradea	−0.060	−0.397	−4.965	−4.484
	(2.772)	(2.768)	(4.021)	(4.070)
Child genderb	0.951	1.009	−2.289	−1.681
	(1.074)	(1.069)	(1.558)	(1.572)
Studyc	−0.680	−0.761	−1.506	−1.755
	(1.263)	(1.271)	(1.832)	(1.869)
Error rate (percent incorrect)d	2.106	2.376	−15.28**	−13.48**
	(3.451)	(3.476)	(5.006)	(5.111)
Reading (grade equivalent)	0.128		3.271*
	(0.895)		(1.298)
Math (grade equivalent)		0.380		2.355+
		(0.853)		(1.254)
Observations	113	113	113	113
R-squared	0.044	0.037	0.142	0.112

Note: Standard errors in parentheses.

⁺p < 0.10.

^*p < 0.05.

^**p < 0.01.

^aGrade level reference variable is preschool.

^bMale = 0, Female = 1.

^cLaboratory-based study = 0, School-based study = 1.

^dExpressed as a decimal between 0 and 1.