According to the study published in the journal Neurology, mild tics such as lip puckering, eye rolling, head tossing, and nose scrunching are important clues to diagnosing other learning disabilities.

• 依据这项刊登在《神经学》杂志上的研究报告，轻微的抽搐如卷舌头、翻眼睛、摇头和抽鼻，是诊断其它一些学习障碍的重要线索。