Table 1. Demographic statistics and reading measures of participants.

Variable	Obs	Mean	Std.	Min	Max
Grade	101	10.54	1.13	8	12
Years in Landmark	101	3.84	2.30	1	11
Gender (0 =  male; 1 =  female)	101	0.36	0.48	0	1
Age in years	101	17.09	1.29	14	19
Degrees of Reading Power Level*	101	59.27	13.95	26	98
Standardized Scores : Block Design	81	47.38	10.23	12	68
Elision	103	8.91	2.18	3	12
Memory for Digits	103	9.15	2.99	2	16
Rapid Letter Naming	103	6.93	2.34	1	15
Rapid Digit Naming	103	7.58	2.36	2	15
Sight Word Efficiency	103	78.52	9.86	54	113
Phoneme Decoding Efficiency	103	79.71	8.26	60	100

*Supplied by school.