As a non-word signal processing, digit span has no effects on reading comprehension achievements.
数字广度作为一种非语言的符号记忆加工对阅读理解成绩没有影响。
参考来源 - 知觉和记忆加工与阅读的关系·2,447,543篇论文数据，部分数据来源于NoteExpress
"With the first subject, after about 20 hours of training, his digit span had risen from 7 to 20," Ericsson recalls.
“对于第一个实验对象，经过大约20小时的训练，他的数字跨度从7上升到20。”爱立信回忆道。
CONCLUSION: It is feasible to change the digit span test in Wechsler Intelligence Scale from individual test to group test.
结论：改变韦氏智力测验中的数字广度的测验方法，把该个别测验作为团体测验使用是可行的。
The standard scores of neurobehavioral functions, except digit span and digit symbol, of experimental group were obviously lower than that of control group.
除数距广度和数字译码外，实验组的其余行为功能项目的标准得分明显低于对照组。
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