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Table 2 ISQ item content and descriptive statistics for adult sample

From: Psychometric validation and refinement of the Interoception Sensory Questionnaire (ISQ) in adolescents and adults on the autism spectrum

Item content

N

M

SD

Skew

Nr>0.7

\(\overline{r }\)

1. I have difficulty making sense of my body’s signals unless they are very strong

444

3.86

1.99

0.01

3

0.60

2. I tend to rely on visual reminders (e.g. times on the clock) to help me know when to eat and drink

444

3.61

2.18

0.20

0

0.47

3. I have difficulty feeling my bodily need for food

444

3.38

2.19

0.34

4

0.64

4. I’m not sure how my body feels when it’s a hot day

444

2.25

1.81

1.30

0

0.52

5. I find it difficult to describe feelings like hunger, thirst, hot or cold

443

2.6

1.97

1.00

4

0.64

6. Sometimes I don’t know how to interpret sensations I feel within my body

444

3.88

2.02

0.02

7

0.65

7. If I injure myself badly, even though I can feel it, I don’t feel the need to do much about it

443

3.04

2.09

0.59

0

0.50

8. I only notice I need to eat when I’m in pain or feeling nauseous or weak

444

3.17

2.21

0.53

3

0.61

9. There are times when I am only aware of changes in my body because of the reactions of other people

444

3.05

1.97

0.55

1

0.61

10. I find it difficult to read the signs and signals within my own body (e.g. when I have hurt myself or I need to rest)

444

3.23

2.01

0.43

12

0.70

11. I have difficulty understanding when I am hungry or thirsty

443

2.88

2.01

0.69

7

0.65

12. I find it difficult to identify some of the signals that my body is telling me (e.g. If I’m about to faint or I’ve over exerted myself)

443

3.27

2.03

0.43

6

0.65

13. It is difficult for me to describe what it feels like to be hungry, thirsty, hot, cold or in pain

442

2.74

1.97

0.85

8

0.67

14. I am confused about my bodily sensations

443

3.06

1.93

0.55

8

0.66

15. I have difficulty locating injury in my body

444

2.45

1.8

1.09

2

0.60

16. Sometimes, when my body signals a problem, I have difficulty working out what the problem might be

443

3.35

1.93

0.36

8

0.66

17. I don’t tend to notice feelings in my body until they’re very intense

443

3.31

2.09

0.44

4

0.66

18. I find it difficult to put my internal bodily sensations into words

443

3.58

2.15

0.26

5

0.64

19. Even when I know that I am hungry, thirsty, in pain, hot or cold, I don’t feel the need to do anything about it

444

2.91

1.89

0.62

1

0.59

20. Even when I know that I am physically uncomfortable, I do not act to change my situation

444

3.01

1.88

0.53

1

0.55

  1. Total n in the adult sample is 495. Nr>0.7, the number of items with which a given item correlates with a strength greater than 0.70; \(\stackrel{-}{{\varvec{r}}}\), average inter-item correlation. ISQ-8 items are bolded