Page 150 - Demo

Chapter 5148strongly, 2 = disagree, 3 = neither agree nor disagree, 4 = agree, and 5 = strongly agree). Descriptive information about all questionnaires scores in Experiment 2, including an overview of the questionnaire reliabilities and distribution parameter, can be found in Table 3. A visualization of the relations between the questionnaire measures, as well as the measures from the heartbeat discrimination task, can be found in Figure S1B in the Supplemental Materials.Interoceptive sensibility. While the same 26 items as in Experiment 1 were used to calculate interoceptive sensibility (i.e., the items of BPQ-SF body awareness scale, see Table 3), participants additionally completed the 20 other items of the BPQ full version body awareness scale in Experiment 2. In addition, we asked the same control question as for the Interoceptive Attention Scale (Gabriele et al., 2022) to unveil whether participants interpreted this scale as a measure of interoceptive accuracy, interoceptive attention or actual frequency and/or intensity of body sensations.Autistic traits, Social anxiety traits, Alexithymia. To assess autistic traits, social anxiety traits and alexithymia, the same questionnaires were used as in Experiment 1. Descriptive statistics and information about the distribution and reliability are summarized in Table 3. Table 3. Distribution of questionnaires scores, including their internal consistency (Cronbach%u2019s Alpha) and distribution parameters, as well as objective interoceptive accuracy measures in the lab study (Experiment 2) N Mean SD Min Max %u03b1 lCL hCL kurtosis skewnessAQ 100 17.30 5.82 4 38 0.72 0.64 0.80 3.69 0.32IAS 100 75.64 8.59 53 98 0.74 0.67 0.81 3.21 0.09BPQ 100 74.16 17.14 39 112 0.91 0.88 0.93 2.24 -0.07LSAS 100 48.73 20.52 0 120 0.93 0.91 0.95 3.65 0.27TAS 100 48.25 11.64 24 77 0.84 0.79 0.88 2.60 0.19IATS 100 57.22 12.54 21 87 0.88 0.84 0.91 2.88 0.09Cardiac IA 100 0.54 0.08 0.33 0.85 5.31 0.64ITPE 100 0.00 1.41 -4.94 3.33 3.82 -0.52Note. AQ = Autism Quotient (Autistic traits), IAS = Interoceptive Accuracy Scale (Trait interoceptive accuracy), BPQ = Body Perception Questionnaire (Interoceptive sensibility), LSAS = Liebowitz Social Anxiety Scale (Social anxiety traits), TAS = Toronto Alexithymia Scale (Alexithymia), IATS = Interoceptive Attention Scale (Trait interoceptive attention), Cardiac IA = Cardiac interoceptive accuracy, ITPE = Interoceptive trait prediction error, lCL/hCL = lower/higher Confidence Level of 95% Confidence Interval associated with %u03b1.