Correlations between working memory and speech performance scores.

r values are shown for each correlation. For the partial correlations, the reduced data from the PCA were used to statistically control for demographic variables. SIQ = sentence recognition in quiet; SIN = sentence recognition in noise; SR = self-reported school rank; FDS = forward digit span; BDS = backward digit span; AR = articulation rate.*p≤0.01.** p≤0.001.各相关分析均报告了相关系数r值。针对偏相关分析，我们采用主成分分析（Principal Component Analysis, PCA）所得的降维数据，对人口学变量进行统计控制。SIQ即安静环境语句识别（Sentence Recognition in Quiet）；SIN即噪声环境语句识别（Sentence Recognition in Noise）；SR即自我报告班级排名（Self-reported School Rank）；FDS即顺向数字广度（Forward Digit Span）；BDS即逆向数字广度（Backward Digit Span）；AR即发音速率（Articulation Rate）。*p≤0.01，**p≤0.001。