Investigators examined construct validity by correlating McGill Pain Questionnaire scores with assessments of psychological state and found that "affective scores contributed to the prediction of MMPI profiles, with intensity emerging as the best predictor" (p. 57). The instrument is considered to have face validity because of the large number of clinical studies, using the MPQ as a dependent variable. Concurrent validity is demonstrated by the association of MPQ scores with analgesia requirements, verbal rating and visual analog rating scales, and ratings of headache intensity and duration. The distinctive score profiles of certain groups provide evidence of discriminant validity. As examples, Reading (1983b) reported that women in acute pelvic pain show greater use of sensory word groups in contrast to "chronic pain patients who use affective and evaluative groups with greater frequency" (p. 58). Pain researchers have used the McGill Pain Questionnaire since its development in 1975. The high intercorrelations on the Pain Rating Index (PRI) and the Number of Words Chosen (NWC) Scale and its validity make it an acceptable instrument for quantitative evaluation of pain response. Hypotheses Tested 1. Sensing types and Intuitive types will not score differently on the sensory category of the McGill Pain Questionnaire. 2. Feeling types and Thinking types will not score differently on the affective scale of the McGill Pain Questionnaire.