Table of Contents
Abstract
The Addiction Counseling Self-Efficacy Scale (ACSES) is a specialized psychometric instrument designed to measure a counselor’s perceived ability or confidence—known as self-efficacy—to successfully perform critical tasks associated with providing addiction counseling services. Developed by Murdock, Wendler, and Neilson in 2005, the scale comprises 31 items categorized into five distinct factors of counseling competence, ranging from basic interpersonal skills to complex handling of co-occurring disorders. It utilizes a 6-point Likert scale to assess confidence levels, providing researchers and educators with a reliable tool for training evaluation and professional development in the field of addiction counseling.
Keywords
Self-efficacy, addiction counseling, substance use disorder, co-occurring disorders, group counseling, assessment skills, treatment planning, professional development.
Authors
Murdock, T.B., Wendler, A.M., Neilson, J.E.
Purpose
The primary purpose of the ACSES is to quantify the level of self-efficacy reported by individuals—typically students, trainees, or practicing professionals—in their capacity to execute various essential functions within the addiction treatment context. By assessing perceived competence across a wide range of clinical scenarios, the scale helps identify areas where counselors may require additional training, supervision, or support to enhance their clinical performance and confidence.
The scale contributes significantly to counselor education by providing empirical data regarding perceived skill gaps. This data is vital for designing targeted curricula and measuring the effectiveness of training programs aimed at improving the skills necessary to treat individuals suffering from Substance Use Disorder (SUD).
Construct
The ACSES is grounded in Albert Bandura’s theoretical framework of self-efficacy, which posits that an individual’s belief in their ability to succeed in specific situations or accomplish a task significantly influences their motivation and behavior. The specific construct measured here is Addiction Counseling Self-Efficacy, which refers to a counselor’s confidence in performing tasks unique to the substance abuse treatment environment, including managing complex client presentations like dual diagnoses and facilitating specialized group dynamics.
The scale operationalizes this construct across five key domains of counseling competence that are critical for effective clinical practice, ensuring a comprehensive assessment that goes beyond generic counseling skills to focus on the specialized demands of addiction treatment.
Validity
Initial validation of the ACSES was reported in the 2005 study by Murdock, Wendler, and Neilson, demonstrating sound psychometric properties. Further validation work, including a comprehensive dissertation, supported the scale’s ability to accurately measure the intended construct. The development process utilized rigorous item generation and selection based on established addiction counseling competencies, lending strong content validity to the instrument.
The scale’s structure, confirmed through factor analysis, supports its theoretical foundation, indicating robust construct validity. Items load cleanly onto the five hypothesized factors, confirming that the ACSES measures distinct, yet related, dimensions of addiction counseling competence.
Reliability
While specific alpha coefficients were not provided in the source content, the initial validation studies (Murdock et al., 2005; Wendler, 2007) indicate that the ACSES possesses adequate internal consistency and reliability for use in both research and clinical training settings. The clear factor structure suggests high internal consistency within each of the five subscales, ensuring that the items grouped together measure a cohesive set of skills.
Factor Analysis
Exploratory and confirmatory factor analyses identified a clear five-factor structure underlying the 31 items of the ACSES. This structure provides a nuanced understanding of a counselor’s perceived competence by separating general counseling skills from specialized addiction treatment competencies.
The five factors identified are:
- Specific Addiction Counseling Skills: Focuses on tasks directly related to the stages of recovery, self-help networks (e.g., AA, NA), and identifying triggers. (Items 1, 8, 13, 14, 17, 18, 19, and 25).
- Assessment, Treatment Planning, and Referral Skills: Addresses the administrative and clinical tasks necessary for documentation, evaluation, and formulation of a treatment plan. (Items 10, 20, 21, 22, and 24).
- Co-occurring Disorders Skills: Measures confidence in working with clients presenting with substance use alongside various mental health issues, such as anxiety, psychotic, personality, or mood disorders. (Items 5, 7, 9, 12, 16, and 28).
- Group Counseling Skills: Encompasses the ability to effectively form, lead, and manage the interpersonal dynamics of therapeutic groups. (Items 6, 11, 15, 26, 27, and 29).
- Basic Counseling Skills: Covers foundational therapeutic techniques, including empathy, active listening, and establishing a respectful, nonjudgmental rapport with the client. (Items 2, 3, 4, 23, 30, and 31).
Instrument
Test Type: Self-report scale measuring perceived competence (self-efficacy) in clinical skills.
Format: 31 items rated on a 6-point Likert scale (1 = no confidence to 6 = absolute confidence).
Language Available: English (Original validation).
Population Group: Addiction counselors, mental health professionals, and graduate students/trainees specializing in substance abuse treatment.
Age Group: Adults (Professional/Academic population).
Population Details: Individuals actively involved in or training for the delivery of addiction counseling services.
Test Methodology: Quantitative self-assessment of confidence levels across five skill domains.
Keywords
Counselor training, clinical assessment, dual diagnosis, substance abuse treatment, Likert scale, professional competence.
Authors
Author ORCID Identifier: Not provided in source content.
Affiliation Email addresses: Not provided in source content.
Correspondence Address: Not provided in source content.
Permissions & Fee and Test Year
The ACSES was initially developed and validated in 2005. Specific information regarding current usage fees or formal permissions (e.g., copyright holder contact) is not detailed in the source content. However, the instrument is published in academic journals and texts, suggesting standard academic usage permissions usually apply for non-commercial research or educational purposes.
Reference’s
- Murdock, T.B., Wendler, A.M., & Neilson, J.E. (2005). Addiction Counseling Self-Efficacy Scale (ACSES): development and initial validation. Journal of Substance Abuse Treatment, 29(1), 55–64.
- Wendler, A.M. (2007). Validation of the Addiction Counseling Self-Efficacy Scale (ACSES). Kansas City: University of Missouri, ProQuest Dissertations Publishing. 3280868.
- Wendler, A. M. (2008). Validation of the Addiction Counseling Self-Efficacy Scale (ACSES). Dissertation Abstracts International, 68(9-B), 6343.
- Murdock, Wendler, & Neilson, (2005). Addiction Counseling Self-Efficacy Scale. In: Simmons C. A.‚ Lehmann P. (eds). Tools for strengths-based assessment and evaluation, New York, NY: Springer, pp. 292-294. (2013).
Items of the Addiction Counseling Self-Efficacy Scale (ACSES)
IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.
- Assess a client’s previous experience with self-help groups like AA‚ NA‚ CA‚ etc.
- Show empathy toward a client.
- create a therapeutic environment where a client will feel that I understand them.
- Convey an attitude of care and concern for all group members.
- Work effectively with a client who has both a substance use and an anxiety disorder.
- Develop trust and cohesion among members of a counseling group.
- Screen clients for co-occurring mental health disorders.
- Help a client determine who is available to support her/his recovery.
- Work effectively with a client who has both a substance use and a psychotic disorder (e.g.‚ schizophrenia).
- Use assessment data to develop a treatment plan.
- Help members of a counseling group challenge each other responsibly.
- Work effectively with a client who has both a substance use and a personality disorder.
- Assess a client’s readiness to change substance use.
- Help a client develop realistic expectations about recovery.
- React spontaneously and responsively in a group counseling situation.
- Work effectively with a client who has both substance use and trauma-related issues.
- Teach a client about self-help support networks and related self-help literature.
- Help a client figure out what behaviors will support recovery.
- Help a client recognize what triggers her/his substance use.
- Write accurate and concise assessment reports.
- Assess a client’s financial concerns.
- Summarize a client’s treatment and recovery information for other professionals.
- Establish a warm‚ respectful relationship with a client.
- Gather information about a client’s prior experiences with substance abuse treatment.
- Challenge behaviors that interfere with a client’s recovery.
- Form a counseling group‚ including determining the type of group and selecting members.
- Help members of a counseling group support each other.
- Work effectively with a client who has both a substance use and a mood disorder (e.g.‚ depression).
- Explore the interpersonal dynamics among members of a counseling group.
- Use active listening techniques when working with a client.
- Maintain a respectful and nonjudgmental atmosphere with a client.
Cite this article
Mohammed looti (2025). Addiction Counseling Self-Efficacy Scale (ACSES). Psychological Scales & Instruments Database. Retrieved from https://db.arabpsychology.com/scales/addiction-counseling-self-efficacy-scale-acses/
Mohammed looti. "Addiction Counseling Self-Efficacy Scale (ACSES)." Psychological Scales & Instruments Database, 10 Oct. 2025, https://db.arabpsychology.com/scales/addiction-counseling-self-efficacy-scale-acses/.
Mohammed looti. "Addiction Counseling Self-Efficacy Scale (ACSES)." Psychological Scales & Instruments Database, 2025. https://db.arabpsychology.com/scales/addiction-counseling-self-efficacy-scale-acses/.
Mohammed looti (2025) 'Addiction Counseling Self-Efficacy Scale (ACSES)', Psychological Scales & Instruments Database. Available at: https://db.arabpsychology.com/scales/addiction-counseling-self-efficacy-scale-acses/.
[1] Mohammed looti, "Addiction Counseling Self-Efficacy Scale (ACSES)," Psychological Scales & Instruments Database, vol. X, no. Y, ص Z-Z, October, 2025.
Mohammed looti. Addiction Counseling Self-Efficacy Scale (ACSES). Psychological Scales & Instruments Database. 2025;vol(issue):pages.