加拿大学者Laurent Mottron在2019年的论文

Temporal Changes in Effect Sizes of Studies Comparing Individuals With and Without Autism

是一个加拿大的学者通过27000名个人分析得到的，结论就是那些被诊断为自闭症的人和没有诊断人差异越来越小，其中有5个对比项下降非常显著。而原因即使诊断标准的降低，而且有篇文章写到，很多时候所谓的诊断不是在于什么，而在于你碰到了什么样的医生，也就是松和紧决定了你是不是ASD

所以现在真的没有必要在意这个帽子，除了很严重的，几年后所谓的ASD和所谓的nt大部分就看不出差异了，我觉得这也是符合常识和逻辑的。也不要因为这个帽子觉得自己小孩就真的没有社交发展，不要给自己设限。另外，也无意中看到瑞典的环保女神通贝里被诊断患有阿斯伯格综合征，强迫症和选择性缄默症，成就感和锻炼是可以带来社交大幅度提升的

Question  Did effect sizes for group-level differences between individuals with autism and control individuals decrease during past decades?

Findings  In this meta-analysis of 11 meta-analyses, effect sizes for 7 distinct differences between groups with autism and control groups decreased over time, with 5 of 7 being statistically significant.

Meaning  The findings suggest that differences between individuals with autism and those without autism have decreased over time, which may be associated with changes in diagnostic practices.

Downward temporal trends for effect size were found for all constructs (slopes: –0.067 to –0.003), with the trend being significant in 5 of 7 cases: emotion recognition (slope: –0.028 [95% CI, –0.048 to –0.007]), theory of mind (–0.045 [95% CI, –0.066 to –0.024]), planning (–0.067 [95% CI, –0.125 to –0.009]), P3b amplitude (–0.048 [95% CI, –0.093 to –0.004]), and brain size (–0.047 [95% CI, –0.077 to –0.016]). In contrast, 3 analogous constructs in schizophrenia, a condition that is also heterogeneous but with no reported increase in prevalence, did not show a similar trend.
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