Clinical samples of children with below-average IQs are not "nonimpaired" and other troubles: comment on Klesges and Sanchez.
D002648:Child; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis*; D007360:Intelligence; D019965:Neurocognitive Disorders / Q000175:diagnosis*; D014888:Wechsler Scales