The global prevalence rate, for ADHD, varies considerably from a 7% rate in Japan to a 20% prevalence rate in Ukraine. What factors contribute to this variance?
A) The variance is explained by the level of economic development of the country.
B) The variance is explained by the number of students enrolled in schools in the country.
C) The variance is explained by the number of special educators in the country.
D) The variance is explained by differences in the definition and in procedures for collecting data.

Question

Quizplus · Accepted Answer

The variance in ADHD prevalence rates across different countries is largely due to differences in how ADHD is defined and diagnosed, as well as variations in the methodologies used for collecting and analyzing data on the condition.

The Global Prevalence Rate, for ADHD, Varies Considerably from a 7