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173921.pdf (publisher's version ) (Closed access)Last December, Dr. Havdahl et al. highlighted the use of autism spectrum disorder (ASD) symptom measurements in specific groups in their article "Multidimensional Influences on Autism Symptom Measures: Implications for Use in Etiological Research". This is an important and timely topic, because public attention is currently tuned to the increasing prevalence of ASD. Dr. Havdahl et al. carefully mapped which of the tested instruments was most sensitive to detect actual ASD symptoms and to distinguish these from other typical comorbid neurodevelopmental disorders, such as intellectual disability (ID) and attention-deficit/hyperactivity disorder.2 p