Screening
A telephone screening was performed to identify eligible participants. The screening involved an initial assessment of the fear of spiders and heights as well as questions addressing the predefined inclusion and exclusion criteria. Participants who fulfilled the screening criteria were invited to participate in the study.Participation in the study consisted of three appointments. The exposure group underwent pre-assessment, exposure treatment, and post-assessment. In contrast, the order for participants in the control group differed in that they first underwent pre- and post-assessment one week apart and then received exposure training. This design allowed to evaluate whether “BAT dosage” (one vs. two BATs) might have had a significant effect on participants’ performance during exposure treatment. Figure 