Table 4.

Parameter estimates of the growth factors for the final model solution.

	High ability group				Low ability group
	Est.	SE	t	p	Est.	SE	t	p
STAGE 1
Means
INT 1	−1.10	0.02	−72.62	<0.001	−1.58	0.03	−59.18	<0.001
SLP 1	0.93	0.01	198.43	<0.001	0.89	0.02	60.21	<0.001
VARIANCES
INT 1	0.18	0.01	34.52	<0.001	0.16	0.01	18.69	<0.001
SLP 1	0.04	0.00	11.68	<0.001	0.09	0.01	15.12	<0.001
COVARIANCE
INT 1 with SLP 1	−0.05	0.00	−21.32	<0.001	−0.05	0.00	−21.32	<0.001
STAGE 2
Means
INT 2	0.41	0.00	215.30	<0.001	−0.48	0.02	−30.13	<0.001
SLP 2	0.12	0.00	463.48	<0.001	0.19	0.00	139.32	<0.001
VARIANCES
INT 2	0.01	0.00	10.94	<0.001	0.01	0.00	3.93	<0.001
SLP 2	0.00	0.00	36.12	<0.001	0.00	0.00	12.13	<0.001
COVARIANCE
INT 2 with SLP 2	0.01	0.00	55.28	<0.001	0.01	0.00	55.28	<0.001