The purpose of the present study was to discern a symptom pattern for environmentally ill patients and provide evidence of the uniqueness of the resultant pattern to this population. Patients' environmental exposure was confirmed by the presence of toxins in the blood serum. All patients were administered psychological and physical symptom checklists, the Clinical Analysis Questionnaire, and a standardized intermediate neuropsychological examination. Results indicate a response pattern of symptoms including fatigue, low energy, weakness, poor concentration, poor memory, poor comprehension, headaches, aches and pains, clumsiness, sinus discomfort, mucus, eye problems, restlessness, and present performance inferior to prior level of functioning. Presence of these symptoms, as well as the uniqueness of this symptom pattern was supported by comparisons of the patient and standardization groups on the two standardized tests.

Sixty subjects divided equally among Anglo-Americans, Black Americans, and Hispanic Americans participated in the study. They were classified as chronic pain patients by medical diagnosis and duration of pain. They were drawing Workers' Compensation and were all blue-collar workers from the Dallas-Fort Worth area. Cognitive complexity is a measure of individuals' ability to construe their feelings, events of their lives, and their world in a meaningful manner. Cognitive complexity appeared to differ among the cultural groups as indicated by significantly different functionally independent construct scores. Anglo-Americans appeared to have a greater internal complexity than did Black Americans and Hispanic Americans.