Chris A. Zeigler Dendy, M.S., Teaching Teens with ADD, ADHD, and Executive Function Deficits, 2nd edition
ISBN# 978-1-60613-016-2

This article is not specific to X and Y conditions but it does present useful information about executive skills and how challenges in this area can impact kids in school.

Excerpt:
“Clearly school is often very difficult for students with attention deficits. However, when executive function deficits are also present, the accompanying problems are often overwhelming to the student and family. Unfortunately, some parents and teachers have had little awareness or sympathy for the challenges presented by these combined deficits. Hopefully, teachers and parents now realize that attention deficit disorder is often a very complex condition….when deficits in executive function and related learning problems are present, students can try their very best and still not succeed in school.”

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