Table 23. Performance of youth with mental retardation compared with performance of youth in the general population based on standard scores from the Woodcock-Johnson III research version direct assessment subtests
|Percentage with standard score|
|Youth in general population1|
|Youth with mental retardation|
|1 Youth in the general population refers to the Woodcock-Johnson norming sample.|
NOTE: Percentages are population estimates based on weighted samples that range from approximately 460 to 480 youth across variables.
SOURCE: Woodock-Johnson, Test of Cognitive Ability: Standard and Supplemental Batteries. Norm Tables, 1989; U.S. Department of Education, Institute of Education Sciences, National Center for Special Education Research, National Longitudinal Transition Study-2 (NLTS2), Wave 1 student's school program survey, 2002.