- To conduct cognitive debriefing tests with 30 pediatric cancer survivors who have global neurocognitive impairment (i.e., the impaired group) to understand the cognitive process of answering the extant pediatric PRO measures by different levels of general intelligence quotient (IQ). Additionally, 10 pediatric cancer survivors who have at least average general IQ (i.e., the unimpaired group) will be recruited for a comparison purpose.