Emotion Reactivity Scale

Abstract

The Emotion Reactivity Scale (ERS) is a self-report instrument designed to measure individual differences in the experience and manifestation of emotional responses. Developed by Nock and colleagues in 2008, the scale specifically targets three core facets of emotional disturbance: heightened Emotion Reactivity, including sensitivity, intensity, and persistence of emotional episodes. The ERS has been widely utilized in clinical research, particularly for assessing features related to borderline personality disorder and its critical relation to Self-Injurious Thoughts and Behaviors (SITB).

This 21-item scale provides a quantifiable measure of how easily and strongly an individual is affected by emotional stimuli, and how long those emotional states endure. Its robust psychometric properties make it a valuable tool for researchers investigating emotional dysregulation across various clinical populations.

Keywords

Emotion reactivity, emotional dysregulation, sensitivity, emotional intensity, persistence, self-injury, psychometrics, affective science, borderline personality disorder.

Authors

Matthew K. Nock, Michelle M. Wedig, Elizabeth B. Holmberg, Jill M. Hooley.

Purpose

The primary purpose of the Emotion Reactivity Scale (ERS) is to provide a reliable and valid assessment tool for measuring the multifaceted nature of emotional reactivity in both clinical and non-clinical populations. It aims to capture the typical patterns of emotional response that characterize individuals who experience emotions as overwhelming, easily triggered, and difficult to terminate.

The scale was explicitly developed and validated to explore the link between heightened emotional responses and severe clinical outcomes, such as self-injurious thoughts and behaviors. By isolating the components of sensitivity, arousal/intensity, and persistence, the ERS allows researchers to pinpoint specific areas of emotional dysregulation that may serve as targets for therapeutic intervention.

Construct

The ERS measures the overarching psychological construct of Emotion Reactivity, conceptualized as the consistent tendency to respond to emotional stimuli with heightened intensity, low threshold, and prolonged duration. This construct is operationalized through three distinct, correlated subscales:

• Sensitivity: Measures the ease with which emotions are triggered, reflecting a low threshold for emotional activation. Items address how easily feelings are hurt or how quickly moods change.
• Arousal/Intensity: Measures the sheer strength and physical manifestation of emotional responses, reflecting how strongly emotions are felt internally and observed externally.
• Persistence: Measures the difficulty in returning to an emotional baseline once an emotion has been triggered, reflecting the prolonged duration or lingering effects of emotional states.

Validity

The development and evaluation of the ERS demonstrated strong evidence of its construct validity, particularly through its established relationship with relevant clinical variables. The authors found that higher ERS scores, particularly across all three subscales, were significantly associated with greater severity of Self-Injurious Thoughts and Behaviors (SITB), providing essential criterion validity. Furthermore, the scale has shown convergent validity by correlating appropriately with other measures of emotional dysregulation and affective instability, confirming that it accurately captures the intended psychological construct.

Reliability

The ERS demonstrates excellent internal consistency across its subscales, supporting its reliability for use in research and clinical assessment. Cronbach’s Alpha coefficients reported in the initial validation study confirm that the items within each factor cohere strongly:

• Sensitivity subscale: Internal consistency was high, with an alpha coefficient of α=.88.
• Arousal/Intensity subscale: Internal consistency was also strong, reported at α=.86.
• Persistence subscale: The persistence factor showed good internal consistency, with an alpha coefficient of α=.81.

These high reliability indices suggest that the ERS is a consistent and stable measure of emotional reactivity components.

Factor Analysis

Initial factor analysis of the 21 items of the Emotion Reactivity Scale revealed a robust, three-factor structure, which aligns precisely with the theoretical conceptualization of emotion reactivity as encompassing distinct dimensions of sensitivity, arousal/intensity, and persistence. The factor structure is clearly defined by the item groupings:

• Sensitivity subscale: Items 2, 5, 7, 9, 12, 13, 14, 15, 16, and 18.
• Arousal/Intensity subscale: Items 3, 4, 6, 17, 19, 20, and 21.
• Persistence subscale: Items 1, 8, 10, and 11.

This clear factor structure supports the discriminative validity of the ERS, confirming that it measures three separate yet related facets of emotional experience.

Instrument

Test Type: Self-report questionnaire, Psychometric scale.

Format: 21 items rated on a 5-point Likert scale, ranging from 0 (not at all like me) to 4 (completely like me).

Language Available: English (Original validation).

Population Group: Clinical and non-clinical adults and adolescents.

Age Group: Typically utilized with adult populations, but applicable to older adolescents capable of self-reflection.

Population Details: The scale has been extensively used in populations characterized by emotional dysregulation, including those with Borderline Personality Disorder and those engaging in Self-Injurious Thoughts and Behaviors.

Test Methodology: Respondents rate the extent to which each statement reflects their typical emotional experience and reaction style.

Keywords

Emotional intensity, emotional sensitivity, emotional persistence, affect, psychopathology, clinical assessment, psychological measurement, Cronbach’s Alpha, Nock.

Authors

Author ORCID Identifier: Not provided in the source material.

Affiliation Email addresses: [email protected] (Matthew K. Nock).

Correspondence Address: Correspondence is directed to Matthew K. Nock (Harvard University).

Permissions & Fee and Test Year

The scale was published in 2008. Specific information regarding current permissions and licensing fees should be sought directly from the corresponding author, Matthew K. Nock. Given its academic origin, the scale is often used freely for non-commercial research purposes, but formal permission is recommended.

Reference’s

The primary reference for the development and validation of the Emotion Reactivity Scale is:

• Matthew K. Nock, Michelle M. Wedig, Elizabeth B. Holmberg, & Jill M. Hooley. (2008). The Emotion Reactivity Scale: Development, Evaluation, and Relation to Self-Injurious Thoughts and Behaviors. Behavior Therapy, Volume 39(2): 107–116.

The instrument can also be found on page 111 of a related publication, “The Emotion Reactivity Scale: Development, Evaluation, and Relation to Self-Injurious Thoughts and Behaviors,” available online. The original PDF can be downloaded here: http://scholar.harvard.edu/dwegner/files/najmi_wegner__nock_2007.pdf

Items of the Emotion Reactivity Scale

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

1. When something happens that upsets me, it’s all I can think about it for a long time.
2. My feelings get hurt easily.
3. When I experience emotions, I feel them very strongly/intensely.
4. When I’m emotionally upset, my whole body gets physically upset as well.
5. I tend to get very emotional very easily.
6. I experience emotions very strongly.
7. I often feel extremely anxious.
8. When I feel emotional, it’s hard for me to imagine feeling any other way.
9. Even the littlest things make me emotional.
10. If I have a disagreement with someone, it takes a long time for me to get over it.
11. When I am angry/upset, it takes me much longer than most people to calm down.
12. I get angry at people very easily.
13. I am often bothered by things that other people don’t react to.
14. I am easily agitated.
15. My emotions go from neutral to extreme in an instant.
16. When something bad happens, my mood changes very quickly. People tell me I have a very short fuse.
17. People tell me that my emotions are often too intense for the situation.
18. I am a very sensitive person.
19. My moods are very strong and powerful.
20. I often get so upset it’s hard for me to think straight.
21. Other people tell me I’m overreacting.