Moore P N, Kinsman R A, Dirks J F
J Clin Psychol. 1984 Nov;40(6):1431-3. doi: 10.1002/1097-4679(198411)40:6<1431::aid-jclp2270400627>3.0.co;2-i.
In a sample of 150 people drawn from a population of asthma, tuberculosis, and chronic pain patients, a key cluster analysis revealed five different clusters of items in the Taylor Manifest Anxiety Scale: Restlessness, Embarrassment, Sensitivity, Physiological Anxiety, and Self-Confidence. These clusters are consistent and four of them appear moderately related, whereas Embarrassment is fairly independent of the others.