Pain Response Inventory (PRI)

Abstract

The Pain Response Inventory (PRI) is a specialized Psychological Assessment tool developed to measure the behavioral and cognitive strategies employed by children and adolescents when responding to pain, particularly chronic or Recurrent Abdominal Pain (RAP). Developed by Walker and colleagues, the 60-item instrument assesses a broad spectrum of Pain Coping mechanisms, categorizing them into Active, Passive, and Accommodative strategies, alongside Stoicism. Its primary function is to provide clinicians and researchers with a detailed profile of a child’s coping style, which is crucial for understanding pain chronicity and guiding targeted psychological interventions.

Keywords

Pain Response Inventory, PRI, Pain Coping, Pediatric Pain, Abdominal Pain, Active Coping, Passive Coping, Catastrophizing, Somatization, Child Psychology.

Authors

Lynn S. Walker, J. G. Smith, Craig A. Smith, Judy Garber, D. A. Van Slyke.

Purpose

The primary purpose of the PRI is to systematically assess the diverse array of cognitive and behavioral responses children utilize when experiencing pain. It moves beyond simple pain intensity measures to capture the complex process of Pain Coping. By identifying specific coping dimensions—such as problem-solving versus behavioral disengagement—the PRI helps in distinguishing between adaptive and maladaptive coping styles associated with pediatric pain conditions.

This detailed measurement is vital for research investigating the maintenance of chronic pain, and for clinical use in tailoring behavioral interventions. For instance, children who predominantly rely on passive coping mechanisms, such as withdrawal or Catastrophizing, may require interventions focused on promoting active coping and self-efficacy.

Construct

The PRI measures the construct of Pain Coping Strategies, which are operationalized into 12 distinct subscales organized under three major higher-order factors, plus an independent factor for Stoicism. These factors reflect the child’s typical response patterns when faced with pain symptoms.

The 12 subscales include:

• Active Coping: Problem-Solving, Seeking Social Support, Rest, Massage/Guard, Condition-Specific Strategies. These strategies involve direct action or seeking external aid to manage or resolve the pain.
• Passive Coping: Self-Isolation, Behavioral Disengagement, Catastrophizing. These are generally considered maladaptive strategies, characterized by avoidance, withdrawal, and negative cognitive distortion.
• Accommodative Coping: Acceptance, Minimizing Pain, Self-Encouragement, Distract/Ignore. These strategies focus on modifying one’s relationship with the pain or diverting attention from it.
• Stoicism: Keeping feelings hidden and not letting others see the struggle.

Validity

The validity of the PRI was established through rigorous Psychometrics analysis during its development. The study by Walker et al. (1997) demonstrated strong evidence for the instrument’s construct validity, confirming that the derived factors aligned theoretically with recognized coping dimensions in pediatric pain literature.

Discriminant validity has been supported by findings showing that PRI scores successfully differentiate between children experiencing chronic pain (such as Recurrent Abdominal Pain (RAP)) and healthy controls, as well as correlating meaningfully with other relevant psychosocial measures, such as the Functional Disability Inventory (FDI) and measures of anxiety and somatization.

Reliability

The PRI exhibits good internal consistency across its various subscales, generally yielding acceptable to strong Cronbach’s alpha coefficients, particularly for the major coping factors (Active, Passive, Accommodative). These findings suggest that items within each subscale reliably measure the same underlying construct.

Additionally, studies have documented adequate test-retest reliability, indicating that the coping patterns measured by the PRI remain stable over short periods, making it a reliable tool for tracking coping behavior in clinical populations.

Factor Analysis

The factor structure of the 60-item PRI was derived using factor analysis, which identified 12 primary coping subscales. These 12 factors load onto three robust, higher-order factors: Active Coping, Passive Coping, and Accommodative Coping. The Stoicism dimension often stands as a separate, distinct factor.

The specific item allocation for the 12 subscales is detailed as follows:

• Problem-Solving: Items 1, 8, 19, 32, 47
• Seeking Social Support: Items 28, 45, 46, 49, 51, 58
• Rest: Items 6, 16, 26, 39, 55
• Massage/Guard: Items 21, 29, 41
• Condition-Specific Strategies: Items 7, 17, 27, 35, 56
• Self-Isolation: Items 5, 15, 25, 38, 54
• Behavioral Disengagement: Items 3, 13, 23, 36, 52
• Catastrophizing: Items 11, 18, 30, 42, 57
• Acceptance: Items 4, 14, 24, 37, 53
• Minimizing Pain: Items 9, 20, 33
• Self-Encouragement: Items 31, 43, 59
• Distract/Ignore: Items 10, 34, 44, 48, 60
• Stoicism: Items 2, 12, 22, 40, 50

Instrument

Test Type: Self-report inventory/Psychological Assessment

Format: 60 items, 5-point Likert scale (0=never, 4=always)

Language Available: English (Original)

Population Group: Children and Adolescents

Age Group: Typically utilized for school-age children through adolescence (approximately 8 to 18 years).

Population Details: Originally validated on clinical populations of children suffering from chronic pain, particularly those diagnosed with Recurrent Abdominal Pain (RAP), as well as non-clinical control groups.

Test Methodology: Respondents are asked how often they engage in specific behaviors or thoughts when they experience a “bad stomach ache.” Responses are scored from 0 (never) to 4 (always).

Keywords

Pain Coping Mechanisms, Pediatric Chronic Pain, Self-Report Measures, Active Coping, Behavioral Disengagement, Psychometrics.

Authors

Author ORCID Identifier: NA

Affiliation Email addresses: [email protected] (Lynn S. Walker)

Correspondence Address: Vanderbilt University Medical Center (Inferred from email affiliation and research history).

Permissions & Fee and Test Year

The PRI was initially developed and introduced around 1991, with the definitive version and comprehensive validation published in 1997. Information regarding current usage fees or specific licensing permissions should be sought directly from the primary author, Lynn S. Walker, or Vanderbilt University Medical Center, although the instrument is widely cited in academic literature.

Test Year: 1991 (Initial), 1997 (Validation/Publication)

Reference’s

The instrument is documented in the following sources. The original PDF manual for related instruments, which often includes the PRI, can be downloaded here: https://www.childrenshospital.vanderbilt.org/uploads/documents/FDI_Manual.pdf.

• Walker, L. S., & Greene, J. W. (1989). Children with recurrent abdominal pain and their parents: More somatic complaints, anxiety, and depression than other patient families? Journal of Pediatric Psychology, 14, 231-243.
• Walker, L. S., Garber, J., and Greene, W. (1991). Somatization symptoms in pediatric abdominal pain patients: Relation to chronicity of abdominal pain and parent somatization. Journal of Abnormal Child Psychology, 19, 379–394.
• Walker, L. S., & Greene, J. W. (1991). The Functional Disability Inventory: Measuring a neglected dimension of child health status. Journal of Pediatric Psychology, 16, 39-58.
• Walker, L. S., Garber, J., & Greene, J. W. (1993). Psychosocial correlates of recurrent childhood pain: A comparison of pediatric patients with recurrent abdominal pain, organic illness, and psychiatric disorders. Journal of Abnormal Psychology, 102, 248–258.
• Walker, L. S., Garber, J., & Greene, J. W. (1994). Somatic complaints in pediatric patients: A prospective study of the role of negative life events, child social and academic competence, and parental somatic symptoms. Journal of Consulting and Clinical Psychology, 62, 1213-1221.
• Walker, L. S., Smith, C. A., Garber, J., and Van Slyke, D. A. (1997). Pain Response Inventory (PRI). In Fischer, Joel., Corcoran, Kevin J. (2007). Measures for Clinical Practice and research: A sourcebook. (4th ed.). NY. Oxford University Pr. Vol. 1, Page (s): 576-579.
• Walker, Lynn S., Smith, J. G., Craig. A., Garber, J., Van Slyke, D. A. (1997). Development and validation of the pain response inventory for children. Psychological Assessment, 9(4), 392-405. Available at: https://www.researchgate.net/publication/232523566.
• Walker, L. S., Beck, J. E., Garber, J., et al. (2009). Children’s Somatization Inventory: Psychometric Properties of the Revised Form (CSI-24). Journal of Pediatric Psychology, 34(4), 430-440.

Items of the Pain Response Inventory (PRI)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The introduction to the scale is: “When you have a bad stomach ache, how often do you…?” Responses are rated on a scale of 0 (never) to 4 (always).

1. Try hard to do something about it?
2. Keep your feelings to yourself?
3. Tell yourself that you can’t deal with it, and quit trying?
4. Try to get used to it?
5. Get as far away from other people as you can?
6. Lie down to try to feel better?
7. Eat something?
8. Try to do something to make it go away?
9. Tell yourself that it doesn’t matter that much to you?
10. Do something you enjoy so you won’t think about it?
11. Think to yourself that it’s never going to stop?
12. Not let other people see what you’re going through?
13. Give up trying to feel better?
14. Try to accept it?
15. Go off by yourself?
16. Try not to move around too much?
17. Drink something?
18. Feel like you can’t stand it anymore?
19. Try to think of a way that you could make it better?
20. Tell yourself that it isn’t that big a deal?
21. Rub your stomach to try to make it feel better?
22. Not tell anyone how you’re feeling?
23. Think to yourself that there’s nothing you can do, so you don’t even try?
24. Try to learn to live with it?
25. Stay away from people?
26. Try to rest?
27. Try to go to the bathroom?
28. Talk to someone to find out what to do?
29. Bend over or curl up to try to feel better?
30. Think to yourself that it’s going to get worse?
31. Tell yourself you can get over the pain?
32. Try to figure out what to do about it?
33. Tell yourself that it’s not that bad?
34. Try to think of something pleasant to take your mind off the pain?
35. Be careful about what you eat?
36. Give up since nothing helps?
37. Tell yourself that’s just the way it goes?
38. Try to be alone?
39. Try to keep still?
40. Keep others from knowing how much it hurts?
41. Hold your stomach to try to make it better?
42. Think to yourself that you might be really sick?
43. Tell yourself to keep going even though it hurts?
44. Try not to think about it?
45. Ask someone for help?
46. Talk to someone who will understand how you feel?
47. Think hard about what to do?
48. Think of things to keep your mind off the pain?
49. Stay close to someone who cares about you?
50. Keep quiet about it?
51. Ask someone for ideas about what you can do?
52. Not even try to do anything about it because it won’t help?
53. Tell yourself “That’s life”?
54. Try to get away from everyone?
55. Stop what you’re doing to see if it will help?
56. Take some medicine?
57. Think to yourself that something might be really wrong with you?
58. Talk to someone so that you’ll feel better?
59. Tell yourself you can deal with the pain?
60. Try to forget about it?