“…For example, in cross-sectional research, Borkovec and colleagues (1983) found that worry was associated with greater feelings of anxiety and muscle tension as well as difficulty refocusing thoughts. Moreover, individuals with GAD, a disorder defined by persistent worry, endorsed more physical symptoms of anxiety, such as trembling, restlessness, fatigue, tension, and shortness of breath compared to controls and individuals with Social Phobia (Hoyer, Becker, & Roth, 2001). Of most theoretical relevance, a path analysis examining the causal relationship between worry and anxiety suggested that worry predicted anxious arousal, whereas anxiety did not predict worry (Gana, Martin, & Canouet, 2001).…”