related anxiety sensations. Participants were randomly assigned to either a psychoeducation control condition (EDU) or psychoeducation plus breathing retraining condition (EDU+BR). The safety behavior hypothesis would be supported if participants in the EDU + BR condition evidence worse outcomes on cognitive process measures, regardless of effects on coping measures. The coping aid hypothesis would be supported if participants in the EDU + BR condition evidence significantly greater improvement, as compared to the EDU condition, on anxiety-related distress and perceived control over anxiety (i.e., coping outcomes), with no worse outcome on the cognitive processes examined. Methods Participants Participants were recruited from an undergraduate participant screening pool. Prospective participants (N = 966) completed an online version of the Anxiety Sensitivity Revised Respiratory Subscale (ASI-R Respiratory). Individuals scoring at least one standard deviation above the mean on the ASI-R Respiratory obtained during the first screening time point (M = 11.94; = 9.28) were invited to participate. Of the 966 screened individuals, 172 SD had an ASI-R Respiratory score of 21 or greater and were sent an email invitation to participate. Eligible individuals were instructed by email that they would not be eligible to participate if they had a condition (e.g., asthma, pregnancy, seizure disorders, heart conditions) that would contraindicate participation in a hyperventilation exercise. No participants who attended an initial laboratory visit (N = 63) were excluded due to contraindicated medical conditions and all participants who received informed consent agreed to participate. The majority of the study sample was female (82.5%), and ages ranged from 18 to 56 years (M = 20.62; = 6.76). The racial breakdown of the sample was 87.3% White, 3.2% SD
related anxiety sensations. Participants were randomly assigned to either a psychoeducation control condition (EDU) or psychoeducation plus breathing retraining condition (EDU+BR). The safety behavior hypothesis would be supported if participants in the EDU + BR condition evidence worse outcomes on cognitive process measures, regardless of effects on coping measures. The coping aid hypothesis would be supported if participants in the EDU + BR condition evidence significantly greater improvement, as compared to the EDU condition, on anxiety-related distress and perceived control over anxiety (i.e., coping outcomes), with no worse outcome on the cognitive processes examined. Methods Participants Participants were recruited from an undergraduate participant screening pool. Prospective participants (N = 966) completed an online version of the Anxiety Sensitivity Respiratory Subscale (ASI-R Respiratory). Individuals scoring at least one standard deviation above the mean on the ASI-R Respiratory obtained during the first screening time point (M = 11.94; SD = 9.28) were invited to participate. Of the 966 screened individuals, 172 had an ASI-R Respiratory score of 21 or greater and were sent an email invitation to participate. Eligible individuals were instructed by email that they would not be eligible to participate if they had a condition (e.g., asthma, pregnancy, seizure disorders, heart conditions) that would contraindicate participation in a hyperventilation exercise. No participants who attended an initial laboratory visit (N = 63) were excluded due to contraindicated medical conditions and all participants who received informed consent agreed to participate. The majority of the study sample was female (82.5%), and ages ranged from 18 to 56 years (M = 20.62; SD = 6.76). The racial breakdown of the sample was 87.3% White, 3.2% Revised