Cognitive appraisals and coping were examined in children, adolescents, and young adults (N = 134) faced with the diagnosis of cancer in a parent. All 3 age groups perceived low personal control and high external control over their parent's illness and used relatively little problem-focused coping. Adolescents and young adults reported more emotion-focused coping and dual-focused coping (both problem- and emotion-focused in intent) than did preadolescent children. Stage and prognosis of parent's cancer were related to appraisals of greater seriousness and stressfulness, and to more avoidance; however, only appraisals of stress were related to symptoms of anxiety-depression. Emotion-focused coping was related to greater avoidance and to higher symptoms of anxiety-depression; coping and control beliefs did not interact in their association with anxiety-depression symptoms.