Addiction Counseling Self-Efficacy Scale (ACSES)

1. Abstract

The Addiction Counseling Self-Efficacy Scale (ACSES) is a standardized psychometric instrument designed to assess a counselor’s perceived self-efficacy and clinical confidence in delivering specialized addiction treatment services. Developed by T. B. Murdock, A. M. Wendler, and J. E. Neilson in 2005, the instrument emerged in response to the growing recognition that general clinical counseling self-efficacy measures do not sufficiently capture the multifaceted, high-stakes competencies required within substance use disorder (SUD) treatment environments. The ACSES comprises 31 items evaluated across a 6-point Likert response format ranging from 1 (no confidence) to 6 (absolute confidence). Psychometric investigations have substantiated a multidimensional five-factor structure representing core clinical competencies: (1) Specific Addiction Counseling Skills (8 items), (2) Assessment, Treatment Planning, and Referral Skills (5 items), (3) Co-Occurring Disorders Skills (6 items), (4) Group Counseling Skills (6 items), and (5) Basic Counseling Skills (6 items).

Empirical evaluations demonstrate that the ACSES possesses robust psychometric properties. Internal consistency reliability coefficients across the subscales consistently range from satisfactory to excellent (α = .80 to .95), with the total scale score demonstrating exceptional reliability (α ≥ .95). Construct, convergent, and discriminant validities have been established through significant correlations with standardized counselor self-efficacy scales, clinical experience metrics, specialized training hours in substance abuse, and supervisory ratings of clinical competence. Factor analytic studies—including exploratory factor analysis (EFA) and subsequent confirmatory factor analysis (CFA)—affirm the five-factor model as an optimal structural representation of addiction counseling self-efficacy. The instrument serves as a critical evaluative tool for counselor education curricula, clinical supervision, clinical training program evaluation, and empirical research investigating therapist effects and treatment outcomes in addiction treatment settings.

2. Keywords

Addiction Counseling Self-Efficacy Scale, ACSES, substance use disorder treatment, counselor self-efficacy, psychometrics, clinical supervision, co-occurring disorders, counselor training, substance abuse counseling competence, social cognitive theory, addiction competencies.

3. Authors

The Addiction Counseling Self-Efficacy Scale was conceptualized, developed, and initially validated by an academic team of counseling psychologists and counselor educators:

• Teresa B. Murdock, Ph.D. — Associate Professor and researcher in Counseling and Educational Psychology, Division of Counseling and Educational Psychology, School of Education, University of Missouri–Kansas City (UMKC), Kansas City, MO, United States. Dr. Murdock’s scholarship focuses on counselor preparation, measurement and evaluation in mental health, and psychometric assessment of clinical competencies.
• Anne M. Wendler, Ph.D. — Counseling Psychologist and researcher, Division of Counseling and Educational Psychology, School of Education, University of Missouri–Kansas City, Kansas City, MO, United States. Dr. Wendler conducted extensive doctoral and post-doctoral validation research on the instrument, investigating its structural stability, construct validity, and clinical utility across diverse treatment cohorts.
• Janelle E. Neilson, Ph.D. — Clinical practitioner and researcher affiliated with the Division of Counseling and Educational Psychology, School of Education, University of Missouri–Kansas City, Kansas City, MO, United States. Dr. Neilson contributed substantially to the operationalization of addiction counseling competencies and empirical data collection.

4. Purpose

The primary purpose of the Addiction Counseling Self-Efficacy Scale (ACSES) is to provide a theoretically grounded, psychometrically validated, and clinically sensitive measure of a practitioner’s subjective confidence in executing specific tasks and clinical interventions inherent to substance use disorder treatment. In the broader field of mental health, general counseling self-efficacy scales—such as the Counselor Activity Self-Efficacy Scales (CASES) or the Self-Efficacy Inventory—focus predominantly on universal therapeutic microskills (e.g., active listening, reflection of feeling, open questioning). Although these universal skills are foundational, they fail to assess the specialized, high-complexity interventions mandated by professional practice guidelines in addiction treatment, such as managing severe withdrawal risks, navigating chronic relapse cycles, utilizing self-help fellowships, coordinating multidimensional level-of-care placements, and addressing complex psychiatric comorbidities.

From an applied perspective, the ACSES serves several critical functions across academic, clinical, and administrative contexts:

• Training Program Evaluation and Curriculum Design: Counselor education and addiction studies programs utilize the ACSES as pre-test and post-test assessments to gauge the instructional efficacy of didactic coursework and clinical practica. By identifying specific areas where trainees report diminished confidence—such as managing psychotic or personality disorders co-occurring with addiction—faculty can adapt curricula to address instructional deficits.
• Clinical Supervision: Clinical supervisors in residential and outpatient treatment facilities employ the ACSES as a formative supervisory diagnostic instrument. The scale highlights a supervisee’s perceived clinical strengths and self-perceived skill deficits, enabling supervisors to tailor supervision sessions, provide targeted observational feedback, and assign caseloads commensurate with the clinician’s developmental stage.
• Credentialing and Competency Benchmarking: The scale assists credentialing bodies and clinical agencies in tracking the developmental trajectory of addiction professionals seeking licensure or certification (e.g., Certified Alcohol and Drug Counselor [CADC], Licensed Addiction Counselor [LAC]). It aligns directly with the core competencies delineated by the Substance Abuse and Mental Health Services Administration (SAMHSA) in Technical Assistance Publication (TAP) 21: Addiction Counseling Competencies.
• Empirical Psychotherapy and Implementation Research: In clinical trial designs and behavioral health services research, the ACSES functions as an essential mediator or moderator variable. Researchers examine whether clinician self-efficacy predicts therapeutic alliance strength, fidelity to evidence-based interventions (e.g., motivational interviewing, cognitive-behavioral relapse prevention), and ultimate client outcomes, including retention in care, abstinence rates, and reduction in substance-related harm.

5. Psychological Construct

The psychological construct assessed by the ACSES is counselor self-efficacy within the specialized domain of addiction counseling. Drawing from Albert Bandura‘s theoretical conceptualization, domain-specific self-efficacy refers to an individual’s belief in their capability to mobilize the cognitive, motivational, and behavioral resources needed to successfully execute specific clinical tasks within a defined context. The ACSES conceptualizes addiction counseling self-efficacy not as a static, global personality trait, but as a dynamic, situation-specific constellation of clinical beliefs structured across five core dimensions:

1. Specific Addiction Counseling Skills

This subscale comprises 8 items that evaluate a clinician’s confidence in executing interventions unique to chemical dependency recovery. Tasks include assessing a client’s prior experiences with mutual-aid or self-help groups (such as Alcoholics Anonymous, Narcotics Anonymous, or Cocaine Anonymous; Item 1), educating clients on 12-step and non-12-step recovery literature (Item 17), evaluating client readiness and motivation to change substance use based on transtheoretical frameworks (Item 13), identifying internal and external relapse triggers (Item 19), and challenging counter-therapeutic behaviors that impede sobriety (Item 25). These skills require an understanding of the chronic, relapsing nature of substance use disorders and the psychosocial dynamics of sustained abstinence.

2. Assessment, Treatment Planning, and Referral Skills

Consisting of 5 items, this dimension assesses confidence in systematic diagnostic procedures, clinical documentation, and collaborative care coordination. Specific competencies encompass utilizing standardized assessment data to formulate individualized, measurable treatment plans (Item 10), writing accurate and concise clinical assessment reports (Item 20), evaluating systemic stressors such as client financial distress (Item 21), synthesizing clinical trajectories for interdisciplinary team members or external medical professionals (Item 22), and conducting thorough clinical inquiries into past addiction treatment admissions (Item 24).

3. Co-Occurring Disorders Skills

Substance use disorders exhibit exceptionally high comorbidity rates with other psychiatric conditions. This 6-item dimension gauges the practitioner’s confidence in managing dual diagnoses. The subscale evaluates perceived competence in screening clients for co-occurring mental health disorders (Item 7) and delivering effective, integrated treatment to individuals presenting with concurrent substance use and anxiety disorders (Item 5), psychotic spectrum disorders such as schizophrenia (Item 9), personality disorders (Item 12), psychological trauma or post-traumatic stress (Item 16), and mood disorders such as major depressive disorder or bipolar disorder (Item 28). Clinicians must feel equipped to manage diagnostic masking, pharmacological interactions, and heightened crisis risk.

4. Group Counseling Skills

Group psychotherapy constitutes the primary treatment modality in most addiction recovery programs. This 6-item subscale measures a counselor’s perceived capability to establish, facilitate, and maintain therapeutic group processes. Key competencies include forming counseling groups by determining criteria and selecting appropriate members (Item 26), cultivating group cohesion and interpersonal safety (Item 6), facilitating constructive, responsible peer confrontation (Item 11), responding spontaneously and flexibly to unfolding group dynamics (Item 15), fostering mutual peer support (Item 27), and analyzing interpersonal relational patterns among group members (Item 29).

5. Basic Counseling Skills

Comprising 6 items, this dimension evaluates the core relational and Rogerian therapeutic microskills that underpin effective therapeutic alliances. Items reflect confidence in demonstrating genuine empathy (Item 2), constructing a supportive, safe therapeutic climate (Item 3), projecting warmth and unconditional positive regard across individual and group formats (Item 4, Item 23), deploying active listening responses (Item 30), and maintaining a nonjudgmental, respectful stance when confronted with complex, stigmatized client behaviors (Item 31).

6. Theoretical Framework

The architectural foundation of the ACSES is rooted in Social Cognitive Theory, formulated by Albert Bandura (1977, 1986, 1997). Bandura defined perceived self-efficacy as a generative capacity through which individuals integrate cognitive, social, emotional, and behavioral sub-skills to serve distinct purposes. Within counselor development literature, self-efficacy is posited as a central cognitive mediator of clinical performance. Counselors who harbor robust self-efficacy beliefs are more likely to set ambitious therapeutic goals, sustain clinical persistence in the face of client resistance or relapse, experience lower levels of professional burnout, and demonstrate cognitive flexibility during complex therapeutic impasses.

Information Sources of Self-Efficacy

According to social cognitive theory, counseling self-efficacy is cultivated and modified via four primary informational sources, each of which is operationalized in the clinical development captured by the ACSES:

• Enactive Mastery Experiences: Direct, successful clinical experiences provide the most potent source of efficacy information. As addiction counselors successfully guide clients through withdrawal management, trigger identification, and relapse prevention plans, their enactive mastery solidifies high ACSES scores.
• Vicarious Experiences: Observing experienced supervisors, clinical mentors, or peers conduct motivational interviewing or facilitate group confrontation offers behavioral modeling that elevates counselor confidence.
• Verbal and Social Persuasion: Evaluative feedback, constructive critique, and supportive supervision from seasoned clinicians strengthen the practitioner’s belief in their ability to handle challenging clinical scenarios, such as managing clients with severe psychotic or personality disorders.
• Physiological and Affective States: Clinical work in addiction counseling involves heightened stress, crisis management, and countertransference. Efficacy beliefs dictate how clinicians interpret autonomic arousal; self-efficacious counselors view physiological activation as readiness rather than debilitating anxiety.

Alignment with Counselor Development Models

The ACSES also interfaces directly with developmental models of clinical supervision, notably the Integrated Developmental Model (IDM) advanced by Stoltenberg and Delworth. Early-stage trainees typically exhibit high anxiety, dependency on external supervision, and compartmentalized efficacy that may be limited to basic counseling skills. As counselors advance through supervised practice, their cognitive structures become more complex, enabling them to integrate specific addiction-focused interventions and master dual-diagnosis management, reflected in balanced, elevated profiles across all five ACSES subscales.

7. Validity

The psychometric validity of the ACSES has been rigorously scrutinized across initial scale construction and subsequent cross-validation studies (Murdock, Wendler, & Neilson, 2005; Wendler, 2007, 2008). Multiple forms of validity evidence substantiate the scale’s utility for clinical and research applications.

Construct and Content Validity

Content validity was established through an exhaustive deductive derivation process. The original item pool was generated by examining nationally recognized practice benchmarks, primarily SAMHSA’s Technical Assistance Publication 21 (Addiction Counseling Competencies), alongside the Council for Accreditation of Counseling and Related Educational Programs (CACREP) addiction specialty standards. An independent expert panel consisting of doctoral-level counselor educators, licensed addiction specialists, and clinical supervisors reviewed the prospective items for clarity, domain representativeness, and clinical authenticity, leading to the refinement of the final 31-item matrix.

Convergent and Concurrent Validity

Convergent validity was evaluated by correlating ACSES subscale and total scores with validated measures of general counseling self-efficacy and professional functioning:

• Statistically significant, positive correlations were observed between the ACSES and the Counseling Self-Estimate Scale (CSES) (correlations ranging from r = .62 to .78, p < .001), demonstrating that while the ACSES shares core variance with generalized clinical confidence, it retains distinct variance attributable to addiction-specific modalities.
• Moderate-to-high correlations were established with the Counselor Activity Self-Efficacy Scales (CASES), particularly between the ACSES Basic Counseling Skills and CASES Exploration/Insight subscales (r > .70).
• ACSES scores correlate positively and significantly with objective indices of professional experience, including total years working in addiction settings (r = .35 to .48, p < .01), number of completed graduate credit hours in substance abuse counseling (r = .40, p < .01), and cumulative clinical supervision contact hours.

Discriminant Validity

Discriminant validity was established by comparing ACSES scores with constructs conceptually distinct from clinical confidence. Nonsignificant or negligible correlations (r < .15) were observed between ACSES dimensions and measures of generalized social desirability, trait anxiety, and demographic variables unrelated to clinical training (e.g., age, biological sex). Furthermore, the scale demonstrates clear criterion-related divergence: professional addiction counselors score significantly higher across all subscales—particularly Specific Addiction Skills and Co-Occurring Disorders—compared to entry-level master’s students in general counseling tracks prior to specialized didactic instruction (t-test comparisons yielding large effect sizes, Cohen’s d > 0.85).

8. Reliability

The ACSES displays consistently high internal consistency and temporal stability across diverse practitioner samples, including certified addiction counselors, licensed professional counselors, social workers, and counseling trainees.

Internal Consistency Reliability

In the seminal psychometric validation by Murdock, Wendler, and Neilson (2005), internal consistency was estimated using Cronbach’s coefficient alpha (α). The entire 31-item scale yielded an overall reliability coefficient of α = .95, indicating excellent internal consistency. Subscale reliabilities were robust:

• Specific Addiction Counseling Skills (8 items): α = .88
• Assessment, Treatment Planning, and Referral Skills (5 items): α = .84
• Co-Occurring Disorders Skills (6 items): α = .89
• Group Counseling Skills (6 items): α = .89
• Basic Counseling Skills (6 items): α = .85

Subsequent independent validation studies (Wendler, 2007, 2008) corroborated these findings, reporting overall alpha estimates ranging from .94 to .96, with individual subscale values consistently remaining above the recommended .80 benchmark for psychometric research instruments.

Temporal Stability (Test-Retest Reliability)

Test-retest reliability was examined across a two- to three-week interval among clinicians not engaged in active coursework or intensive training interventions. The stability coefficients demonstrated strong temporal reliability: the total scale intraclass correlation coefficient (ICC) was r = .86 (p < .001). Subscale test-retest coefficients ranged from .79 (Basic Counseling Skills) to .88 (Co-Occurring Disorders Skills), confirming that the instrument measures stable self-efficacy beliefs while retaining sensitivity to genuine learning interventions.

9. Factor Analysis

The structural dimensionality of the ACSES was established through systematic exploratory and confirmatory factor analytic procedures across distinct validation cohorts.

Exploratory Factor Analysis (EFA)

During scale construction, Murdock et al. (2005) conducted an exploratory factor analysis on an initial pool of candidate items administered to a national sample of practicing substance abuse counselors. Principal Axis Factoring with oblique rotation (Promax) was utilized, based on the theoretical expectation that clinical competencies within a single professional domain are inherently correlated. Factor extraction criteria included Cattell’s scree test, eigenvalues greater than 1.0, and item interpretability:

• The scree plot and parallel analysis supported a distinct five-factor solution, which collectively accounted for approximately 56.4% of the total variance.
• Item retention criteria were strict: items were retained if they exhibited primary factor loadings ≥ .40 on their designated target factor and minimal cross-loadings (≤ .25 difference between primary and secondary loadings).
• 31 items successfully met these criteria, mapping cleanly onto the five conceptual domains: Specific Addiction Counseling Skills (Factor I), Assessment/Treatment Planning/Referral Skills (Factor II), Co-Occurring Disorders Skills (Factor III), Group Counseling Skills (Factor IV), and Basic Counseling Skills (Factor V).

Confirmatory Factor Analysis (CFA)

Wendler (2007, 2008) conducted confirmatory factor analyses using structural equation modeling (SEM) to evaluate the structural integrity of the five-factor model in an independent replication sample. Goodness-of-fit indices demonstrated acceptable to superior fit for the correlated five-factor model:

• Chi-Square / Degrees of Freedom Ratio (χ²/df): 1.84 (values < 2.0 indicate excellent parsimonious fit)
• Comparative Fit Index (CFI): .93
• Tucker-Lewis Index (TLI): .92
• Root Mean Square Error of Approximation (RMSEA): .056 (90% CI [.049, .063]), falling well within the standard < .06 threshold for close fit
• Standardized Root Mean Square Residual (SRMR): .051

Competing structural models—including a unidimensional single-factor model and a hierarchical model with a single higher-order factor—demonstrated significantly poorer fit relative to the correlated five-factor structure. Standardized factor loadings across all 31 items in the CFA model ranged from .58 to .86, demonstrating that each item is a statistically robust indicator of its latent clinical construct.

10. Instrument / Measurement Tool

The structural specifications, administration protocols, and scoring guidelines for the ACSES are summarized below:

• Test Type: Standardized self-report psychometric rating scale; domain-specific clinical competency self-efficacy inventory.
• Target Population: Addiction counselors, substance abuse treatment specialists, licensed professional counselors, clinical social workers, marriage and family therapists, psychologists, and graduate trainees in behavioral health disciplines.
• Item Count: 31 items.
• Administration Time: Approximately 8 to 12 minutes.
• Format: Paper-and-pencil or digital/computer-assisted administration.
• Response Scale: 6-point Likert-type scale anchored from 1 to 6:
  • 1 = No confidence
  • 2 = Very little confidence
  • 3 = Moderate confidence
  • 4 = Substantial confidence
  • 5 = Strong confidence
  • 6 = Absolute confidence
• Subscale Item Composition:
  • Specific Addiction Counseling Skills (8 items): Items 1, 8, 13, 14, 17, 18, 19, 25
  • Assessment, Treatment Planning, and Referral Skills (5 items): Items 10, 20, 21, 22, 24
  • Co-Occurring Disorders Skills (6 items): Items 5, 7, 9, 12, 16, 28
  • Group Counseling Skills (6 items): Items 6, 11, 15, 26, 27, 29
  • Basic Counseling Skills (6 items): Items 2, 3, 4, 23, 30, 31
• Scoring Procedures:
  • There are no reverse-coded items on the scale; all items are positively phrased.
  • Subscale Scores: Calculated either by summing the numerical ratings of the constituent items or by calculating the mean item score (range: 1.00 to 6.00). Mean scoring is generally preferred to facilitate meaningful comparisons across subscales containing differing numbers of items.
  • Total Composite Score: Calculated by summing all 31 items (range: 31 to 186) or computing the global grand mean (range: 1.00 to 6.00). Higher scores denote greater clinical self-efficacy within addiction counseling.

11. Permissions & Fee and Test Year

The Addiction Counseling Self-Efficacy Scale was officially published in 2005 in the peer-reviewed literature by T. B. Murdock, A. M. Wendler, and J. E. Neilson within the Journal of Substance Abuse Treatment. In 2013, the instrument was republished for clinical training and strengths-based assessment purposes in the reference volume Tools for Strengths-Based Assessment and Evaluation (edited by C. A. Simmons and P. Lehmann, Springer Publishing).

Licensing and Accessibility: The scale is available for non-commercial educational, supervisory, and academic research purposes. Graduate students, academic researchers, and counselor educators may administer the instrument within institutional review board (IRB)-approved studies and clinical training settings without paying licensing fees, provided that appropriate scholarly attribution is accorded to the original authors. For commercial applications, proprietary software integrations, or corporate training platforms, direct formal permission must be secured from the copyright holders (Elsevier / Journal of Substance Abuse Treatment or the primary authors).

12. References

The academic literature documenting the theoretical, empirical, and psychometric development of the ACSES includes:

• Bandura, A. (1977). Self-efficacy: Toward a unifying theory of behavioral change. Psychological Review, 84(2), 191–215. https://doi.org/10.1037/0033-295X.84.2.191
• Bandura, A. (1997). Self-efficacy: The exercise of control. W. H. Freeman and Company.
• 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. https://doi.org/10.1016/j.jsat.2005.04.004
• Murdock, T. B., Wendler, A. M., & Neilson, J. E. (2013). Addiction Counseling Self-Efficacy Scale. In C. A. Simmons & P. Lehmann (Eds.), Tools for strengths-based assessment and evaluation (pp. 292–294). Springer Publishing Company.
• Substance Abuse and Mental Health Services Administration. (2006). Addiction counseling competencies: The knowledge, skills, and attitudes of professional practice (Technical Assistance Publication Series 21, HHS Publication No. SMA 08-4171). U.S. Department of Health and Human Services.
• Wendler, A. M. (2007). Validation of the Addiction Counseling Self-Efficacy Scale (ACSES) (Doctoral dissertation, University of Missouri–Kansas City). ProQuest Dissertations Publishing, Publication No. 3280868.
• Wendler, A. M. (2008). Validation of the Addiction Counseling Self-Efficacy Scale (ACSES). Dissertation Abstracts International: Section B: The Sciences and Engineering, 68(9-B), 6343.

13. Items of the Scale (Questionnaire)