“…That is, after experiencing episodes of a particular kind of discomfort, one can learn to anticipate or dread further instances of discomfort while becoming progressively sensitive to lower magnitudes of pertinent cues (the "reaction-sensitization" of Cameron, 1947). That, for example, the anxiety neurotic's fear of the symptoms of fear may be at least partly determined by physiological preconditions seems indicated by the report of Cohen (1949) that the vital capacity of the anxious person tends to be lower than that of normals, and that, thus, his breathing, heart rate, etc. may be more vulnerable to stress.…”