How accurately do you think you perceive your body's signals?
The Interoceptive Accuracy Scale (IAS) is a validated self-report measure developed by researchers Jennifer Murphy, Rebecca Brewer, David Plans, Sahib S. Khalsa, Caroline Catmur, and Geoffrey Bird to assess your beliefs about how accurately you can perceive various internal bodily sensations across multiple domains—such as your heartbeat, hunger, thirst, breathing, temperature, and other physiological signals.
The IAS measures your perceived interoceptive accuracy: your belief in your ability to correctly perceive what's happening inside your body, rather than simply how often you notice these sensations.
Note: This survey is not a diagnostic tool. It is part of a research study exploring different dimensions of bodily awareness and how they relate to imagery experiences, including aphantasia.
Instructions: Below are several statements regarding how accurately you believe you can perceive specific bodily sensations. Please rate on the scale how well you believe you can perceive each specific signal.
For example, if you often feel you need to urinate and then realize you do not need to when you go to the toilet, you would rate your accuracy perceiving this bodily signal as low.
Please only rate how well you can perceive these signals without using external cues. For example, if you can only perceive how fast your heart is beating when you measure it by taking your pulse, this would not count as accurate internal perception.