Neuropsychological and Behavioral Testing in Younger Patients With Cancer

Inclusion Criteria:

* The patient must be currently be enrolled or plan to be enrolled on a COG therapeutic study that aims to examine neuropsychological, social, emotional, and/or behavioral functioning
* The patient must have receptive and expressive language skills in English, French, or Spanish; if a patient meets these criteria but the parent/guardian speaks a language other than English, French, or Spanish, the patient may still be enrolled and tested, and the parent-report measures should be omitted
* All patients and/or their parents or legal guardians must sign a written informed consent
* All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met

Exclusion Criteria:

* Patients with a history of moderate to profound intellectual disability (i.e. intelligence quotient \[IQ\] =\< 55) are not eligible for enrollment; PLEASE NOTE: Children with a prior history of attention deficit hyperactivity disorder (ADHD) or a specific learning disability (e.g., dyslexia) are eligible for this study