Addiction Counseling Self-Efficacy Scale (ACSES)

1. Abstract

The Addiction Counseling Self-Efficacy Scale (ACSES) is a psychometrically validated, 31-item self-report instrument developed by T. B. Murdock, A. M. Wendler, and J. E. Neilson (2005) to assess counselors’ perceived clinical capabilities in treating individuals with substance use disorders (SUDs). Rooted conceptually in Albert Bandura’s Social Cognitive Theory and models of counselor development, the ACSES measures clinician self-efficacy across five empirically substantiated domains: (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). Respondents rate their confidence on a 6-point Likert-type continuum ranging from 1 (No confidence) to 6 (Absolute confidence). Initial psychometric validation demonstrated exceptional internal consistency, with total scale Cronbach’s alpha coefficients exceeding .95 and subscale reliabilities ranging from .82 to .93. Subsequent factor analytic investigations, including structural equation modeling and confirmatory factor analysis (Wendler, 2007, 2008), affirmed a robust five-factor hierarchical architecture demonstrating satisfactory construct, convergent, discriminant, and incremental validity. The ACSES distinguishes between novice and expert clinicians, sensitive to variations in specialized training, clinical supervision, and clinical tenure. In contemporary addiction science, the ACSES serves as a foundational measurement tool for clinical training evaluation, credentialing preparation, programmatic accreditation, and behavioral health workforce development, bridging the translational gap between evidence-based didactic curricula and perceived clinical competence.

2. Keywords

Addiction Counseling Self-Efficacy Scale, ACSES, Counselor Self-Efficacy, Substance Use Disorders, Dual Diagnosis Competencies, Clinical Supervision, Psychometrics, Factor Analysis, Measurement in Behavioral Health, Counselor Education

3. Authors

The Addiction Counseling Self-Efficacy Scale was originated and standardized by:

• T. B. Murdock, Ph.D. — Division of Counseling and Educational Psychology, School of Education, University of Missouri–Kansas City (UMKC), Kansas City, Missouri, United States.
• A. M. Wendler, Ph.D. — Counseling Psychology Program, Division of Counseling and Educational Psychology, University of Missouri–Kansas City (UMKC), Kansas City, Missouri, United States.
• J. E. Neilson, Ph.D. — School of Education, University of Missouri–Kansas City (UMKC), Kansas City, Missouri, United States.

Subsequent psychometric refinement and large-scale cross-validation were conducted systematically through doctoral and postdoctoral research spearheaded by Dr. A. M. Wendler (2007, 2008) at the University of Missouri–Kansas City.

4. Purpose

The primary purpose of the Addiction Counseling Self-Efficacy Scale (ACSES) is to provide an empirically sound, domain-specific instrument for quantifying a practitioner’s subjective belief in their capability to execute the clinical tasks essential to addiction treatment. While general counselor self-efficacy scales—such as the Counselor Self-Efficacy Scale (CSES) and the Self-Efficacy Inventory (SEI)—measure broad therapeutic alliance and core micro-skills, they consistently fail to capture the complex, multi-tiered clinical nuances inherent in substance abuse treatment settings. Addictions counseling demands specialized capabilities, such as managing relapse triggers, facilitating specialized psychoeducational and process groups, coordinating mutual-help involvement (e.g., 12-step programs), navigating medical/psychiatric comorbidities, and formulating behavioral contingency plans.

From a clinical and supervisory standpoint, the ACSES addresses the operational needs of behavioral health agencies, clinical supervisors, and counselor educators. Clinicians frequently encounter severe clinical dilemmas, elevated client ambivalence, and systemic barriers in addiction treatment. Counselors possessing low self-efficacy in specific addiction competencies are significantly more susceptible to professional burnout, therapeutic drift, countertransference complications, and premature occupational turnover. By implementing the ACSES, clinical supervisors can pinpoint specific skill deficits (e.g., managing clients with comorbid schizophrenia, or balancing confrontational intervention with client autonomy) and tailor supervisory interventions, targeted continuing education, and deliberate practice accordingly.

In academic and research contexts, the ACSES functions as an outcome measure for evaluating training program efficacy, measuring student growth across master’s and doctoral counseling practica, and tracking the impact of specialized didactic coursework. Researchers utilize the instrument to model the structural relationships between counselor self-efficacy, therapeutic alliance strength, treatment adherence, and longitudinal client outcomes (such as abstinence rates, reduction in substance-related harm, and retention in outpatient therapy).

5. Psychological Construct

The ACSES conceptualizes addiction counseling competence through the psychological lens of task-specific self-efficacy. Self-efficacy does not assess an individual’s actual procedural competence or objective clinical knowledge in a standardized test format; rather, it measures their subjective judgment of their capability to mobilize the cognitive, emotional, motivational, and behavioral resources required to meet specific situational demands. The construct is articulated across five correlated yet conceptually distinct subscales:

1. Specific Addiction Counseling Skills (8 Items)

This subscale captures competencies native to the management and recovery phases of substance use disorders. It evaluates a counselor’s perceived ability to assess client readiness to change using motivational frameworks, identify and deconstruct cognitive and environmental relapse triggers, negotiate realistic expectations for long-term recovery, promote engagement with community-based mutual-aid recovery organizations (e.g., Alcoholics Anonymous, Narcotics Anonymous, SMART Recovery), and directly challenge maladaptive, recovery-inhibiting behaviors without rupturing the working alliance. For instance, Item 19 assesses a clinician’s confidence in helping clients systematically dissect internal emotional cues and external cue reactivity that prompt substance cravings.

2. Assessment, Treatment Planning, and Referral Skills (5 Items)

This dimension encompasses the technical, administrative, and clinical documentation proficiencies required in structured clinical environments. The items evaluate confidence in transforming raw assessment metrics into measurable, individualized treatment plans, writing concise clinical documentation, gathering historical data regarding prior treatment episodes, assessing socioeconomic and financial stressors, and synthesizing complex diagnostic information for interdisciplinary treatment teams and external referral sources. Clinicians must perceive themselves as competent liaisons who operate within systemic healthcare frameworks.

3. Co-occurring Disorders Skills (6 Items)

Given that co-occurring mental health disorders (dual diagnoses) represent the clinical norm rather than the exception in addiction settings, this subscale measures self-efficacy in identifying, screening, and providing concurrent counseling to individuals presenting with substance abuse paired with serious psychiatric illnesses. Specific items address clinical confidence in working with concurrent anxiety disorders, mood disorders (e.g., major depressive disorder, bipolar disorder), psychotic spectrum disorders (e.g., schizophrenia), severe personality disorders (e.g., borderline or antisocial personality disorders), and complex psychological trauma.

4. Group Counseling Skills (6 Items)

Group psychotherapy constitutes the primary therapeutic modality within inpatient, residential, and intensive outpatient addiction facilities. This subscale measures the clinician’s confidence in establishing group cohesion, formulating therapeutic group composition, fostering responsible interpersonal feedback among members, managing disruptive or resistant group dynamics, and responding spontaneously to emergent clinical crises within a group setting. High scores on this subscale reflect confidence in managing dynamic multi-client systems while preserving psychological safety.

5. Basic Counseling Skills (6 Items)

This foundational subscale assesses the counselor’s perceived mastery of person-centered, core facilitative conditions. Grounded in the Rogerian tradition, these items measure active listening, conveying nonjudgmental positive regard, demonstrating authentic clinical empathy, cultivating warmth and respect, and establishing an emotional atmosphere where the client perceives deep understanding and therapeutic safety. These basic skills serve as the critical bedrock upon which specific addiction interventions are deployed.

6. Theoretical Framework

The ACSES is theoretically anchored in Social Cognitive Theory, formulated by Albert Bandura (1977, 1986, 1997), and its domain-specific application to counselor training articulated by Larson and Daniels (1998) as well as Lent, Brown, and Hackett’s Social Cognitive Career Theory (SCCT). According to Bandura, human functioning is governed by a reciprocal interaction between cognitive/personal factors, behavioral actions, and environmental conditions. Central to this triadic reciprocal causation is perceived self-efficacy: people’s beliefs in their capabilities to produce designated levels of performance that exercise influence over events affecting their lives.

Bandura posits that self-efficacy beliefs are developed through four primary informational sources:

• Mastery Experiences: Direct successful execution of clinical tasks represents the most authentic evidence of efficacy. Counselors who successfully navigate complex client presentations (e.g., de-escalating a client with severe co-occurring trauma and substance use) develop robust beliefs in their clinical competence.
• Vicarious Experiences: Observing peer counselors, clinical supervisors, or video-recorded master therapists execute complex interventions fosters the belief that one can achieve comparable outcomes.
• Social and Verbal Persuasion: Evaluative feedback, constructive clinical supervision, and mentoring reinforce the counselor’s faith in their clinical capacity.
• Physiological and Affective States: How a counselor interprets somatic arousal (e.g., autonomic agitation when confronting resistance or group conflict) influences perceived competence; viewing stress as manageable arousal rather than paralyzing anxiety bolsters self-efficacy.

In counseling psychology, Larson and Daniels (1998) integrated Bandura’s framework into the Social Cognitive Model of Counselor Training (SCMCT). The SCMCT asserts that counselor self-efficacy functions as the primary cognitive mediator of counselor performance, clinical judgment, self-regulation, and persistence in the face of client setbacks. In addictions treatment, where client relapse is an anticipated clinical phenomenon and treatment resistance is frequent, robust self-efficacy is vital to prevent defensive therapeutic postures, nihilistic countertransference, or clinical abandonment.

7. Validity

The psychometric validity of the ACSES has been rigorously substantiated across numerous exploratory, confirmatory, and criterion-related investigations.

Construct and Structural Validity

Construct validity was initially established by Murdock, Wendler, and Neilson (2005) through comprehensive exploratory factor analysis (EFA) using principal axis factoring and oblique rotation. The analytical sample comprised professional addiction counselors and graduate-level counseling students. The five extracted factors explained substantial common variance and aligned precisely with the clinical competencies delineated by the National Association of Alcoholism and Drug Abuse Counselors (NAADAC) and the Substance Abuse and Mental Health Services Administration (SAMHSA TAP 21: Addiction Counseling Competencies).

Convergent and Discriminant Validity

Convergent validity was evaluated by correlating the ACSES with established, generalized measures of counseling self-efficacy, including the Counselor Self-Efficacy Scale (CSES) and the Counselor Activity Self-Efficacy Scales (CASES). As hypothesized by researchers, the ACSES demonstrated robust, statistically significant positive correlations with these instruments (ranging from r = .62 to r = .78, p < .001). However, the correlations were not so high as to indicate redundant measurement, confirming that while the ACSES shares common variance with general clinical self-efficacy, it captures unique behavioral variance specific to substance use treatment.

Discriminant validity has been demonstrated by examining the relationship between the ACSES and theoretically unrelated psychological constructs, such as social desirability (measured by the Marlowe-Crowne Social Desirability Scale), where negligible or non-significant correlations were observed (r < .15, p > .05). Furthermore, the scale cleanly differentiates between distinct dimensions of counseling; for example, scores on the Co-occurring Disorders Skills subscale correlate only moderately with Basic Counseling Skills (r ≈ .45), demonstrating that interpersonal warmth does not inherently equate to perceived diagnostic and psychiatric management capability.

Criterion and Incremental Validity

The ACSES demonstrates robust criterion-related validity. Murdock et al. (2005) and Wendler (2007) reported significant group differences based on clinical exposure: licensed addiction professionals and advanced clinicians reported significantly higher ACSES total and subscale scores than master’s-level practicum students or newly hired paraprofessionals (F-tests showing large effect sizes, partial η² > .20). Incremental validity has been demonstrated in regression models where ACSES scores predicted supervisor ratings of counseling performance and objective clinical competence above and beyond generalized counseling self-efficacy measures and general cognitive ability.

8. Reliability

The ACSES demonstrates exceptional internal consistency and temporal stability across diverse clinical and academic samples.

Internal Consistency

In the original validation study by Murdock et al. (2005), the overall 31-item scale exhibited an outstanding Cronbach’s alpha coefficient of α = .95. The five distinct subscales demonstrated solid internal consistency values:

• Specific Addiction Counseling Skills (8 items): α = .91
• Assessment, Treatment Planning, and Referral Skills (5 items): α = .87
• Co-occurring Disorders Skills (6 items): α = .91
• Group Counseling Skills (6 items): α = .89
• Basic Counseling Skills (6 items): α = .86

Subsequent psychometric investigations, including Wendler’s (2007, 2008) multi-site cross-validation study involving 320 practicing substance abuse counselors, confirmed robust reliability metrics, yielding a full-scale alpha of α = .96, with subscale coefficients consistently falling between .85 and .93. Corrected item-total correlations across all 31 items ranged from .51 to .79, indicating strong item discrimination without excessive item redundancy.

Temporal Stability (Test-Retest Reliability)

Test-retest stability was evaluated over a two-to-three-week test-retest interval among a stable cohort of clinical trainees prior to the initiation of new coursework or clinical rotations. The total scale test-retest reliability coefficient was r = .88 (p < .001). Subscale test-retest coefficients ranged from .80 to .86, demonstrating that perceived self-efficacy on the ACSES reflects stable cognitive self-schemas while remaining appropriately sensitive to deliberate educational interventions and clinical supervision over extended time frames.

9. Factor Analysis

The structural dimensionality of the ACSES was systematically delineated through both exploratory and confirmatory factor analytical approaches.

Exploratory Factor Analysis (EFA)

In the developmental investigation by Murdock, Wendler, and Neilson (2005), an initial pool of candidate items derived from national addiction competencies was administered to a developmental sample. Principal axis factoring (PAF) followed by oblique (Promax) rotation was selected due to theoretical assumptions that clinical counseling competencies are inherently interrelated.

Analysis of eigenvalues (> 1.0 criterion), Cattell’s scree plot inflection, and parallel analysis converged on an optimal five-factor solution. All retained 31 items displayed prominent primary factor pattern loadings (> .50) onto their designated subscale constructs, with minimal cross-loadings (< .30 on secondary factors). The five factors explained over 60% of the total scale variance.

Confirmatory Factor Analysis (CFA)

Wendler (2007, 2008) conducted a rigorous confirmatory factor analysis on an independent cross-validation sample of practicing addiction treatment specialists to test competing structural models: a unidimensional model, an uncorrelated five-factor model, a correlated five-factor model, and a second-order hierarchical model (where a general addiction counseling self-efficacy latent factor accounts for the five primary factors).

The correlated five-factor model and the hierarchical second-order model demonstrated superior fit to the observed empirical covariance matrix, satisfying standard psychometric criteria:

• Comparative Fit Index (CFI): .94
• Tucker-Lewis Index (TLI): .93
• Root Mean Square Error of Approximation (RMSEA): .058 (90% CI [.051, .065])
• Standardized Root Mean Square Residual (SRMR): .049
• χ²/df ratio: 1.84

Standardized factor loadings for individual items across all five subscales ranged from .61 to .88, confirming that each item functions as a statistically sound operational indicator of its respective latent competency domain.

10. Instrument / Measurement Tool

• Instrument Name: Addiction Counseling Self-Efficacy Scale (ACSES)
• Original Authors: T. B. Murdock, A. M. Wendler, and J. E. Neilson (2005)
• Construct Assessed: Perceived counselor self-efficacy in executing clinical tasks specific to substance use disorder treatment and co-occurring conditions
• Item Count: 31 items
• Administration Format: Self-administered paper-and-pencil or secure online computer-based questionnaire
• Target Population: Addiction counselors, substance abuse treatment technicians, counseling psychology trainees, clinical social workers, marriage and family therapists, and professional behavioral health clinicians
• Completion Time: Approximately 8 to 12 minutes
• Response Scale: 6-point Likert-type scale ranging from 1 to 6:
  • 1 = No confidence
  • 2 = Very little confidence
  • 3 = Some confidence
  • 4 = Moderate confidence
  • 5 = A lot of confidence
  • 6 = Absolute confidence
• Subscale Breakdown:
  • 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:
  • All 31 items are positively worded; there are no reverse-scored items.
  • Subscale Scores: Calculated either as the sum of responses within each subscale or as the subscale mean score (sum divided by the number of items on that subscale), producing mean subscale metrics ranging from 1.0 to 6.0.
  • Total Score: Calculated as the overall sum of all 31 items (ranging from 31 to 186) or the full scale mean score (sum divided by 31, ranging from 1.0 to 6.0).
  • Higher scores signify higher levels of clinical self-efficacy within specific addiction treatment domains.

11. Permissions & Fee and Test Year

• Year of Publication: 2005 (Initial publication in the Journal of Substance Abuse Treatment; further comprehensive validation in 2007/2008).
• Copyright & Ownership: Copyright © 2005 Elsevier Inc. and the authors (T. B. Murdock, A. M. Wendler, and J. E. Neilson).
• Academic and Educational Use: The scale is widely published in peer-reviewed literature and academic handbooks (e.g., Simmons & Lehmann, 2013). The instrument is accessible for non-commercial educational, training, clinical supervision, and scholarly research purposes without payment of licensing fees, provided proper formal academic citation is maintained.
• Commercial Use: Any commercial deployment, proprietary software integration, or profit-generating assessment battery utilization requires formal written licensing permission from the copyright holder and the original authors.

12. References

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. (1986). Social foundations of thought and action: A social cognitive theory. Prentice-Hall.

Bandura, A. (1997). Self-efficacy: The exercise of control. W. H. Freeman.

Larson, L. M., & Daniels, J. A. (1998). Review of the counseling self-efficacy literature. The Counseling Psychologist, 26(2), 179–218. https://doi.org/10.1177/0011000098262002

Lent, R. W., Hackett, G., & Brown, S. D. (1992). Toward the unifying social cognitive theory of career and academic interest, choice, and performance. Journal of Counseling Psychology, 39(1), 89–108. https://doi.org/10.1037/0022-0167.39.1.89

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

Simmons, C. A., & Lehmann, P. (Eds.). (2013). Tools for strengths-based assessment and evaluation. Springer Publishing Company, pp. 292–294.

Substance Abuse and Mental Health Services Administration. (2006). Addiction counseling competencies: The knowledge, skills, and attitudes of professional practice. Technical Assistance Publication (TAP) Series 21. HHS Publication No. (SMA) 08-4171. Rockville, MD: Substance Abuse and Mental Health Services Administration.

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, 68(9-B), 6343.

13. Items of the Scale