The Clinical Anger Scale (CAS)

Abstract

The Clinical Anger Scale (CAS) is a specialized Psychological scale designed primarily for use in clinical settings to quantify the intensity and maladaptive expression of anger. Developed by William E. Snell, Jr. and colleagues in 1995, this instrument functions as a comprehensive self-report questionnaire.

It comprises 21 clusters of statements, each offering four graded options that reflect increasing severity of the symptom. The CAS moves beyond simple trait or state measures by focusing specifically on pervasive anger, hostility, and the resulting interference with crucial aspects of daily life, including work performance, sleep patterns, decision-making capabilities, and interpersonal relationships. It serves as an essential diagnostic and assessment tool for clinicians determining treatment paths for patients struggling with problematic levels of emotional dysregulation and hostility.

Keywords

Clinical Anger Scale, CAS, Anger assessment, hostility, self-report inventory, psychological measurement, clinical psychology, psychopathology, emotional regulation, aggression.

Authors

William E. Snell, Jr., Steven Gum, R. L. Shuck, J. A. Mosley, T. L. Hite.

Purpose

The principal objective of the Clinical Anger Scale (CAS) is twofold: firstly, to provide a quantitative measure of severe, chronic, or persistent anger experiences in individuals; and secondly, to evaluate the extent to which these feelings interfere with functional domains of life. The CAS is intended to serve as a diagnostic aid to assess the degree of impairment caused by chronic hostility, thereby facilitating the determination of appropriate therapeutic interventions.

Unlike standard measures of trait or state anger, the CAS is clinically focused, seeking to identify disruptive, pervasive, and potentially dangerous manifestations of anger, such as intense hostility, explosive rage, or aggressive intent toward others. This clinical focus allows practitioners to distinguish between normative emotional responses and clinically significant anger problems that warrant specialized treatment.

Construct

The CAS is psychometrically designed to measure the construct of Clinical Anger. This construct is defined as intense, chronic, and poorly managed anger that results in significant personal distress and verifiable impairment across multiple areas of functioning. The scale’s strength lies in its ability to capture not merely the frequency of feeling angry, but the destructive cognitive, emotional, and behavioral sequelae associated with this maladaptive emotion.

The key dimensions assessed by the instrument, which collectively define the scope of Clinical Anger, include:

• The intensity and chronic nature of angry feelings and general irritability.
• Manifestations of hostility and the tendency toward verbal or physical aggression.
• Negative self-evaluation and profound feelings of failure fueled by internal anger.
• Significant interference with social functioning and the quality of interpersonal relationships.
• Anger-related somatic and vegetative symptoms, such as disturbances in sleep, appetite, or general physical health.

Validity

The initial development and validation study conducted by Snell and colleagues (1995) provided substantial preliminary evidence supporting the scale’s validity for measuring clinical anger. The development process specifically sought to ensure the CAS demonstrated strong convergent validity, meaning its scores correlate highly with established measures of anger, aggression, and hostility.

Furthermore, the instrument exhibits appropriate discriminant validity, differentiating the core construct of clinical anger from measures of unrelated psychological traits. Its confirmed clinical utility stems from its effectiveness in assessing the specific level of psychological distress and functional impairment directly associated with chronic anger, thereby confirming that the scale accurately measures the intended clinical manifestation of the construct.

Reliability

The Clinical Anger Scale (CAS) has demonstrated robust psychometric reliability, making it a consistent instrument for assessing pathological anger. The original psychometric investigation reported high internal consistency (alpha coefficients), which indicates that the 21 item clusters reliably measure a unified, underlying construct of clinical anger.

This high degree of internal consistency is crucial, as it supports the confident application of the CAS in both demanding clinical assessment environments, where accurate diagnosis is paramount, and in rigorous research settings requiring stable and consistent measurement across participant groups.

Factor Analysis

While the initial publication of the CAS emphasized the scale’s overall reliability and validity, treating it primarily as a measure yielding a single, comprehensive total score reflective of overall clinical anger severity and impairment, subsequent research has explored its underlying factor structure.

Various factor analyses have been conducted to determine if clinical anger, as measured by the CAS, is strictly unidimensional or if it comprises specific subcomponents. Common factors identified in the literature relate to: external expression of anger (e.g., hostility and shouting), internal experience of anger (e.g., irritation and self-blame), and the degree of functional impairment (e.g., interference with work or sleep).

Instrument

Test Type: Self-report Questionnaire (Psychological Inventory)

Format: The instrument consists of 21 clusters of statements. Each cluster presents four options (A, B, C, D) reflecting increasing levels of severity. Respondents utilize a forced-choice format, selecting the statement in each cluster that best reflects their current feelings.

Language Available: English (Original development).

Population Group: Clinical and non-clinical adults, specifically those undergoing assessment for psychological disorders characterized by aggression or significant emotional regulation difficulties.

Age Group: Adolescents and Adults.

Population Details: Widely employed across diverse populations for assessing the intensity of chronic anger, associated hostility, and coping ability in both clinical practice and research contexts.

Test Methodology: The scale uses a forced-choice response format, where options typically score incrementally (e.g., 0 to 3 or 1 to 4). The total score is derived by summing the numerical weights of the selected options, providing a continuous measure of clinical anger severity.

Keywords

Psychological assessment, hostility scale, anger management, psychopathology screening, clinical screening, personality assessment, forced-choice questionnaire, emotional dysregulation.

Authors

Author ORCID Identifier: Not specified in source content.

Affiliation Email addresses: Not specified in source content.

Correspondence Address: Not specified in source content.

Permissions & Fee and Test Year

Test Year: 1995 (Year of primary publication).

Permissions/Fee: The Clinical Anger Scale was originally published in an academic journal, the Journal of Clinical Psychology (published by the American Psychological Association, APA). While typical academic usage is generally permitted, commercial use or large-scale institutional reproduction may require formal permission from the copyright holder, often the authors or the journal publisher. The instrument can be found online at: http://www4.semo.edu/snell/scales/CAS.htm and http://www4.semo.edu/snell/TESTING.HTM.

Reference’s

• Snell, W. E., Jr., Gum, S., Shuck, R. L., Mosley, J. A., & Hite, T. L. (1995). The Clinical Anger Scale: Preliminary reliability and validity. Journal of Clinical Psychology, 51, 215-226.

Items of the The Clinical Anger Scale (CAS)

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

FEELINGS INVENTORY INSTRUCTIONS: The group of items below inquire about the types of feelings you have. Each of the 21 groups of items has four options.

For example‚ ITEM 99 ……. A. I feel fine.

           B. I don’t feel all that well.

           C. I feel somewhat miserable.

           D. I feel completely miserable.

For each cluster of items‚ read and identify the statement that best reflects how you feel. For example‚ you might choose A in the above example. If so‚ then you would darken in the letter (A) on the answer sheet next to the item number associated with that group of statements. In this example‚ that item number would have been "99."

     Now go ahead and answer the questions on the answer sheet. Be sure to answer every question‚ even if you’re not sure‚ and use a #2 pencil. Make sure you select only one statement from each of the 21 clusters of statements.

PLEASE BE HONEST IN RESPONDING TO THE STATEMENTS.

1. ….. A. I do not feel angry.

• B. I feel angry.
• C. I am angry most of the time now.
• D. I am so angry and hostile all the time that I can’t stand it.

2. ….. A. I am not particularly angry about my future.

• B. When I think about my future‚ I feel angry.
• C. I feel angry about what I have to look forward to.
• D. I feel intensely angry about my future‚ since it cannot be improved.

3. ….. A. It makes me angry that I feel like such a failure.

• B. It makes me angry that I have failed more than the average person.
• C. As I look back on my life‚ I feel angry about my failures.
• D. It makes me angry to feel like a complete failure as a person.

4. ….. A. I am not all that angry about things.

• B. I am becoming more hostile about things than I used to be.
• C. I am pretty angry about things these days.
• D. I am angry and hostile about everything.

5. ….. A. I don’t feel particularly hostile at others.

• B. I feel hostile a good deal of the time.
• C. I feel quite hostile most of the time.
• D. I feel hostile all of the time.

6. ….. A. I don’t feel that others are trying to annoy me.

B. At times I think people are trying to annoy me.

• C. More people than usual are beginning to make me feel angry.
• D. I feel that others are constantly and intentionally making me angry.

7. ….. A. I don’t feel angry when I think about myself.

• B. I feel more angry about myself these days than I used to.
• C. I feel angry about myself a good deal of the time.
• D. When I think about myself‚ I feel intense anger.

8. ….. A. I don’t have angry feelings about others having screwed up my life.

• B. It’s beginning to make me angry that others are screwing up my life.
• C. I feel angry that others prevent me from having a good life.
• D. I am constantly angry because others have made my life totally miserable.

9. ….. A. I don’t feel angry enough to hurt someone.

• B. Sometimes I am so angry that I feel like hurting others‚ but I would not really do it.
• C. My anger is so intense that I sometimes feel like hurting others.
• D. I’m so angry that I would like to hurt someone.

10. …..A. I don’t shout at people any more than usual.

• B. I shout at others more now than I used to.
• C. I shout at people all the time now.
• D. I shout at others so often that sometimes I just can’t stop.

11. …..A. Things are not more irritating to me now than usual.

• B. I feel slightly more irritated now than usual.
• C. I feel irritated a good deal of the time.
• D. I’m irritated all the time now.

12. …..A. My anger does not interfere with my interest in other people.

B. My anger sometimes interferes with my interest in others.

• C. I am becoming so angry that I don’t want to be around others.
• D. I’m so angry that I can’t stand being around people.

13. …..A. I don’t have any persistent angry feelings that influence my ability to make decisions.

• B. My feelings of anger occasionally undermine my ability to make decisions.
• C. I am angry to the extent that it interferes with my making good decisions.
• D. I’m so angry that I can’t make good decisions anymore.

14. …..A. I’m not so angry and hostile that others dislike me.

• B. People sometimes dislike being around me since I become angry.
• C. More often than not‚ people stay away from me because I’m so hostile and angry.
• D. People don’t like me anymore because I’m constantly angry all the time.

15. …..A. My feelings of anger do not interfere with my work.

• B. From time to time my feelings of anger interfere with my work.
• C. I feel so angry that it interferes with my capacity to work.
• D. My feelings of anger prevent me from doing any work at all.

16. …..A. My anger does not interfere with my sleep.

• B. Sometimes I don’t sleep very well because I’m feeling angry.
• C. My anger is so great that I stay awake 1—2 hours later than usual.
• D. I am so intensely angry that I can’t get much sleep during the night.

17. …..A. My anger does not make me feel any more tired than usual.

• B. My feelings of anger are beginning to tire me out.
• C. My anger is intense enough that it makes me feel very tired.
• D. My feelings of anger leave me too tired to do anything.

18. …..A. My appetite does not suffer because of my feelings of anger.

• B. My feelings of anger are beginning to affect my appetite.
• C. My feelings of anger leave me without much of an appetite.
• D. My anger is so intense that it has taken away my appetite.

19. …..A. My feelings of anger don’t interfere with my health.

• B. My feelings of anger are beginning to interfere with my health.
• C. My anger prevents me from devoting much time and attention to my health.
• D. I’m so angry at everything these days that I pay no attention to my health and well-being.

20. …..A. My ability to think clearly is unaffected by my feelings of anger.

• B. Sometimes my feelings of anger prevent me from thinking in a clear-headed way.
• C. My anger makes it hard for me to think of anything else.
• D. I’m so intensely angry and hostile that it completely interferes with my thinking.

21. …..A. I don’t feel so angry that it interferes with my interest in sex.

• B. My feelings of anger leave me less interested in sex than I used to be.
• C. My current feelings of anger undermine my interest in sex.
• D. I’m so angry about my life that I’ve completely lost interest in sex.