RecruitingClinical trialA Study of Neurocognitive Tests and Questionnaires for People With Head and Neck Cancer Who Are Undergoing Radiation TherapyThe researchers are doing this study to collect more information about if, and how, neurocognitive function may be affected in people being treated with radiation therapy for head and neck cancer. Part of this study is to see if patients diagnosed with head and neck cancer who are undergoing radiation therapy are able to complete neurocognitive testing and questionnaires at 3 times over a period of 1 year.