Dalsgaard, Søren; Humlum, Maria Knoth; Nielsen, Helena Skyt - In: Economics Letters 117 (2012) 3, pp. 663-665
Recent papers indicate that children who are relatively old-for-grade have a significantly lower incidence of ADHD diagnosis. We find that this is not the case in Denmark, suggesting that diagnoses are less subjective in a regime where only specialists diagnose.