Summarize the following journal article using the PICO method if able and using explanations for the following objectives Recall the prevalence rates of severe irritability and attention-deficit/hyperactivity disorder (ADHD) in youth.
1. Analyze the bidirectional associations between irritability and ADHD symptoms.
2. Interpret the relationship between irritability and inhibitory control.
3. Justify the rationale for dividing the sample into equally sized discovery and replication subsamples.