Previous Research Has Shown That ODD Was More Prevalent Among

Previous research has shown that ODD was more prevalent among younger children than among adolescents. Why might these research findings be misleading?

A) Previous versions of the DSM did not allow children to be diagnosed with ODD if they were diagnosed with CD
B) Most of these studies involved predominantly White, middle-class samples of children.
C) These studies inappropriately inferred a causal relationship between age and prevalence.
D) The studies relied on cross sectional, not longitudinal, data