Unexpected arousal, anxiety sensitivity, and their interaction on CO₂-induced panic: Further evidence for the context-sensitivity vulnerability model

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• 作者：Michael J. Telch^a ; ^{Telch@Austin.utexas.edu"" rel=""nofollow} ; Patrick J. Harrington^a ; Jasper A.J. Smits^b ; Mark B. Powers^b
• 关键词：35 % CO₂ challenge ; Panic provocation ; Context-sensitivity vulnerability model ; Biological challenge ; Arousal unexpectedness ; Anxiety sensitivity
• 刊名：Journal of Anxiety Disorders
• 出版年：2011
• 出版时间：June 2011
• 年：2011
• 卷：25
• 期：5
• 页码：645-653
• 全文大小：286 K

文摘

The present experiment tested several predictions derived from the context-sensitivity vulnerability model of panic. Participants (N = 79) scoring either high or low in anxiety sensitivity (AS) and with no history of unexpected panic were randomly assigned to one of two instructional sets: expected arousal (EA) or expected relaxation (ER). All participants were administered inhalation of room air and 35 % CO₂ in a counterbalanced order. Consistent with theoretical predictions, High-AS participants who received ER instructions showed greater emotional responding compared to High-AS participants who received EA instructions, while instructional set did not affect responding among Low-AS participants. Panic attacks were observed in 52 % of the High-AS-ER group compared to 17 % , 5 % , and 5 % in the High-AS-EA, Low-AS-ER, and Low-AS-EA groups respectively. These findings are consistent with the theory's assertion that dispositional tendencies, such as anxiety sensitivity potentiate the panicogenic effects of threat-relevant context variables.