TRIM Forgiveness Inventory

Abstract

The TRIM Forgiveness Inventory, formally known as the Transgression-Related Interpersonal Motivations Scale (TRIM-12), is a widely used psychological scale designed to measure an individual’s motivational responses following an interpersonal transgression or injury. Developed by McCullough and colleagues in 1998, the scale operationalizes forgiveness not as a feeling, but as a reduction in negative motivations toward the transgressor. The TRIM-12 is typically structured around two core dimensions: Avoidance Motivation and Revenge Motivation. It is essential for research investigating relationship recovery, mental health outcomes, and the psychological processes underlying genuine reconciliation.

Keywords

Forgiveness, Avoidance, Revenge, Interpersonal Motivations, Transgression, TRIM-12, Psychological Scale, Close Relationships, Reconciliation.

Authors

Michael E. McCullough, Kenneth C. Rachal, Steven J. Sandage, Everett L. Worthington, Jr., Susan W. Brown, T. L. Hight

Purpose

The primary purpose of the TRIM Forgiveness Inventory is to provide a reliable and valid measure of the specific motivational changes that occur in a victim following an offense committed by another person, usually within a close relationship context. The scale helps researchers quantify the extent to which an injured party is motivated to seek harm against the transgressor (revenge) or to withdraw from the relationship (avoidance). By measuring the decrease in these negative, transgression-related motivations, the instrument effectively assesses the presence of forgiveness.

The scale is instrumental in clinical and social psychological studies aimed at evaluating the effectiveness of interventions designed to promote forgiveness and relationship repair. It moves beyond simple self-report of ‘feeling forgiven’ by focusing on actionable, measurable motivations that predict future behavior and relationship stability.

Construct

The TRIM-12 measures Transgression-Related Interpersonal Motivations, which are conceptualized as the antithesis of forgiveness. Forgiveness, according to the theoretical framework underlying the TRIM-12, is defined as the voluntary replacement of negative, unforgiving emotions and motivations (avoidance and revenge) with positive, benevolent ones toward the transgressor. The scale specifically measures two primary constructs:

• Avoidance Motivation: This subscale assesses the respondent’s desire to withdraw from, maintain distance from, or psychologically cut off the relationship with the transgressor. Items reflect attempts to minimize interaction, trust, or emotional warmth.
• Revenge Motivation: This subscale assesses the respondent’s desire to inflict harm, pain, or punishment upon the transgressor. Items reflect motivations for retribution, payback, or wishing ill upon the offender.

Validity

The TRIM-12 has demonstrated robust psychometric properties across numerous studies, supporting its construct and predictive validity. The instrument was developed based on extensive theoretical elaboration regarding interpersonal forgiving, building upon earlier foundational work. Studies have consistently shown that the subscales are distinct yet related, correlating negatively with measures of relationship quality and positively with measures of emotional distress and rumination following an interpersonal transgression.

The scale’s validity is supported by its ability to predict behavioral outcomes, such as the likelihood of seeking reconciliation or maintaining hostility. The two-factor structure accurately captures distinct motivational systems, confirming that avoidance and revenge are separate, though often co-occurring, responses to injury.

Reliability

The reliability of the TRIM-12 subscales is typically high, demonstrating strong internal consistency. Across diverse samples and research contexts, Cronbach’s alpha coefficients for both the Avoidance Motivation and Revenge Motivation subscales generally fall within the acceptable range (often 0.80 or higher), indicating that the items within each subscale reliably measure the intended underlying construct. Test-retest reliability has also been established, confirming the stability of motivational patterns over relevant time periods following a transgression.

Factor Analysis

The structure of the TRIM-12 was primarily established and confirmed through factor analysis. Initial analyses supported a two-factor model corresponding to the motivational dimensions of Avoidance and Revenge. This structure is theoretically sound, positing that unforgiveness is multidimensional rather than a single construct. The original research highlighted that these two factors reliably account for the variance in transgression-related responses, providing strong empirical evidence for the distinct conceptualization of avoidance behaviors and retaliatory desires.

Instrument

Test Type: Self-report questionnaire, Psychological Scale

Format: Items rated on a 5-point Likert Scale, where 1 = Strongly Disagree and 5 = Strongly Agree (or similar variation, as indicated in the source: a = Strongly Disagree, e = Strongly Agree).

Language Available: English (original), widely translated into numerous languages for international research.

Population Group: General population, typically individuals who have experienced a significant interpersonal transgression.

Age Group: Adolescents and Adults (typically 18+ for research using the original scale).

Population Details: Primarily validated using samples of college students and adults in committed relationships who have reported experiencing a recent or salient relational offense.

Test Methodology: Respondents are instructed to focus on a specific, identified transgressor and indicate the extent to which they agree or disagree with statements reflecting their current motivations toward that person.

Keywords

Psychometrics, Avoidance Motivation, Revenge Motivation, Interpersonal Conflict, Measurement, Relational Health, McCullough.

Authors

Author ORCID Identifier: Not provided in source, but Michael E. McCullough is a key author.

Affiliation Email addresses: Not provided in source.

Correspondence Address: Not provided in source, but McCullough was affiliated with the University of Miami at the time of publication.

Permissions & Fee and Test Year

The TRIM Forgiveness Inventory (TRIM-12) was first published and validated in 1998. The scale is generally considered available for academic and non-commercial research use. The original PDF of the instrument is often provided freely by the primary author for research purposes. The original PDF can be downloaded here: http://www.psy.miami.edu/faculty/mmccullough/forgiveness/TRIM-12.pdf. Further related documentation is available at: http://www.psy.miami.edu/faculty/mmccullough/Papers/forgiveness_benefit_jccp.pdf

Reference’s

• McCullough, M.E., Rachal, K.C., Sandage, S.J., Worthington, E.L., Jr., Brown, S.W., & Hight, T.L. (1998). Interpersonal forgiving in close relationships: II. Theoretical elaboration and measurement. Journal of Personality and Social Psychology, 76, 1586-1603.
• Wade, S.H. (1989). The development of a scale to measure forgiveness. Unpublished doctoral dissertation, Fuller Graduate School of Psychology, Pasadena, CA.
• Michael E. McCullough, Lindsey M. Root, and Adam D. Cohen. (2006). Writing About the Benefits of an Interpersonal Transgression Facilitates Forgiveness. Journal of Consulting and Clinical Psychology, 74, No. 5, 887–897.

Items of the TRIM Forgiveness Inventory

Scoring Key Interpretation: a = Strongly Disagree, b = Disagree, c = Neutral, d = Agree, e = Strongly Agree

Factor Structure (Based on provided source data):

• Avoidance Motivation: Items 2, 4, 5, 7, 8, and 12
• Revenge Motivation: Items 1, 3, 6, 9, and 11

Original 12 Items (Often used as the core TRIM-12):

• ____ I’ll make him/her pay.
• ____ I wish that something bad would happen to him/her.
• ____ I want him/her to get what he/she deserves.
• ____ I’m going to get even.
• ____ I want to see him/her hurt and miserable.
• ____ I keep as much distance between us as possible.
• ____ I live as if he/she doesn’t exist isn’t around.
• ____ I don’t trust him/her.
• ____ I find it difficult to act warmly toward him/her.
• ____ I avoid him/her.
• ____ I cut off the relationship with him/her.
• ____ I withdrew from him/her

Additional Items Listed in Source Content (Likely part of a longer version or development phase):

• I’ll make him/her pay.
• I am trying to keep as much distance between us as possible.
• Even though his/her actions hurt me‚ I have goodwill for him/her.
• I wish that something bad would happen to him/her.
• I am living as if he/she doesn’t exist‚ isn’t around.
• I want us to bury the hatchet and move forward with our relationship.
• I don’t trust him/her.
• Despite what he/she did‚ I want us to have a positive relationship again.
• I want him/her to get what he/she deserves.
• I am finding it difficult to act warmly toward him/her.
• I am avoiding him/her.
• Although he/she hurt me‚ I am putting the hurts aside so we could resume our relationship.
• I’m going to get even.
• I forgive him/her for what he/she did to me.
• I cut off the relationship with him/her.
• I have released my anger so I can work on restoring our relationship to health.
• I want to see him/her hurt and miserable.
• I withdraw from him/her.