Data Analysis of Normative Sample for the Erxin Scales

The frequency distribution, histograms, and probability density curves of the overall and subscale DQs for the normative sample all followed a normal distribution. The DQDevelopmental quotient (DQ) scores were divided into six levels in the normative evaluation: superior (with a ratio of 2.7–5.9%), high average (with a ratio of 12.6–20.3%), average (with a ratio of 51.7–64.5%), low average (with a ratio of 12.8–20.5%), borderline (with a ratio of 2.3–8.0%), and delayed (with a ratio of 1.8–3.5%). Percentiles for the DQ scores at different main test agesMain test ages were established, and an additional Communication Warning BehaviorDevelopmental scale subscales communication warning behavior Subscale was added for ASD screening in children, with scores above 12 indicating a potential risk or suspicion of ASD.