Anxiety sensitivity (AS) refers to the fear of behaviors or sensations associated with the experience of anxiety. Bodily sensations related to anxiety are mistaken as a harmful experience causing more intense anxiety or fear. For example, a person may fear the shakes as impending neurological disorder. Anxiety sensitivity (AS) refers to the fear of behaviors or sensations associated with the experience of anxiety. Bodily sensations related to anxiety are mistaken as a harmful experience causing more intense anxiety or fear. For example, a person may fear the shakes as impending neurological disorder. In the 1970s and 1980s the fear of fear was considered as an important consequence of panic attacks. It was assumed that after a first panic attack, people learn to fear recurrence, and thus developed agoraphobia.