Self-Efficacy Scales – Drug Abstinence

Abstract

The Self-Efficacy Scales for Drug Abstinence are psychometrically validated instruments designed to measure an individual’s perceived confidence in their ability to abstain from drug use across various high-risk situations. Developed primarily within the theoretical framework of the Transtheoretical Model (TTM) of change, the scale exists in two primary formats: a 20-item version and a shorter 12-item version. These scales are critical tools in addiction treatment and relapse prevention research, providing quantifiable data on the client’s perceived competence to maintain sobriety when confronted by internal states (e.g., negative affect, cravings) or external triggers (e.g., social pressure). The resulting scores help clinicians gauge an individual’s readiness for change and predict potential vulnerability to relapse.

Keywords

Self-Efficacy, Drug Abstinence, Substance Abuse, Transtheoretical Model, Relapse Prevention, Addiction Assessment, Psychological Measurement.

Authors

Carlo C. DiClemente, James O. Prochaska, Matthew L. Hiller, Wayne F. Velicer, J. Scott Rossi.

Purpose

The primary purpose of the Drug Abstinence Self-Efficacy Scales is to assess the degree of confidence an individual has in maintaining drug abstinence across a diverse range of challenging circumstances. This measure is essential for applying stage-matched interventions derived from the TTM, as self-efficacy is a core construct influencing progression through the stages of change (e.g., maintenance, action).

By identifying specific contexts where self-efficacy is low (e.g., dealing with social pressure versus managing physical withdrawal), the scales allow researchers and clinicians to tailor treatment strategies. Low confidence in specific domains often signals heightened risk for relapse, making the scale a valuable prognostic and monitoring tool in substance abuse treatment programs.

Construct

The scale measures the construct of Self-Efficacy, as applied specifically to the behavior of drug abstinence. Self-efficacy, as theorized by Bandura, refers to an individual’s belief in their capacity to execute behaviors necessary to produce specific performance attainments. In the context of addictive behaviors, this translates to the confidence one possesses to resist the temptation to use drugs in situations previously associated with use or during periods of stress or discomfort.

The items are structured around typical high-risk situations for relapse, which are categorized into distinct factors reflecting different types of triggers—emotional, physical, social, and internal urges. Measuring self-efficacy is crucial because it is often reciprocally related to the stages of change; as individuals move from contemplation to action and maintenance, their confidence in their ability to abstain typically increases.

Validity

The scales demonstrate strong evidence of construct validity, particularly through their alignment with the theoretical underpinnings of the Transtheoretical Model. Studies, such as that by Hiller et al. (2000), have confirmed that the scale effectively differentiates between individuals based on their stage of change and their level of risk for substance use continuation or relapse.

The factor structure, detailed below, provides evidence of internal structure validity, showing that the items reliably group into theoretically meaningful domains of relapse risk (Negative Affect, Social/Positive, Physical Concerns, and Cravings/Urges). These domains are consistent with established models of relapse vulnerability.

Reliability

The Drug Abstinence Self-Efficacy Scales exhibit high internal consistency, indicating strong reliability across the subscales. The 20-item version, as tested in populations such as drug-involved probationers (Hiller et al., 2000), yielded Cronbach’s alpha coefficients demonstrating robust reliability for all factors:

• Negative Affect: 0.92
• Social/Positive: 0.92
• Physical and Other Concerns: 0.87
• Withdrawal/Urges (Cravings and Urges): 0.89

These high alpha values suggest that the items within each factor are highly correlated and reliably measure the intended underlying construct of self-efficacy in that specific high-risk domain.

Factor Analysis

Factor analysis of the 20-item Drug Abstinence Self-Efficacy Scale typically reveals a four-factor structure, representing distinct categories of relapse-inducing situations. These factors provide a nuanced view of an individual’s confidence profile, rather than just a global score.

The four factors and their respective item loadings (for the 20-item version) are structured as follows:

• Negative Affect: Measures confidence in abstaining when experiencing adverse emotional states (Items 3, 6, 14, 16, 18).
• Social/Positive: Measures confidence in abstaining during social situations, celebrations, or when offered drugs by others (Items 4, 8, 15, 17, 20).
• Physical and Other Concerns: Measures confidence in abstaining when experiencing physical discomfort, illness, or general life stressors (Items 2, 5, 9, 12, 13).
• Cravings and Urges: Measures confidence in resisting strong physical or psychological urges, withdrawal symptoms, or testing willpower (Items 1, 7, 10, 11, 19).

The abbreviated 12-item version maintains this four-factor structure but uses fewer items per factor for efficiency, making it suitable for situations requiring rapid assessment.

Instrument

Test Type: Psychological Self-Report Inventory

Format: Likert-type scale, administered via paper or digitally.

Language Available: Primarily English; adaptations may exist in other languages.

Population Group: Individuals undergoing treatment or recovery for drug abuse and substance use disorders, including clinical and non-clinical populations (e.g., probationers, general population).

Age Group: Adults and potentially older adolescents (depending on context).

Population Details: Has been validated successfully in diverse groups, including drug-involved probationers, as documented by Hiller et al. (2000).

Test Methodology: Respondents rate their confidence on a 5-point scale for each item, typically ranging from 1 (Not at all confident) to 5 (Extremely confident).

The rating scale used is: 1=Not at all confident, 2=Not very confident, 3=Moderately confident, 4=Very confident, 5=Extremely confident. Higher scores indicate greater perceived self-efficacy for maintaining abstinence, suggesting a lower risk of relapse.

Keywords

Abstinence Confidence, Drug Dependence, Stage of Change, Psychometric Scale, Relapse Risk, Substance Use Disorder.

Authors

Author ORCID Identifier: Not provided in source material.

Affiliation Email addresses: Not provided in source material.

Correspondence Address: Not provided in source material. The instrument is affiliated with the Habits Lab at UMBC, led by C. C. DiClemente.

Permissions & Fee and Test Year

The instrument is often associated with research conducted by C. C. DiClemente and colleagues, with foundational work dating back to the late 1980s and early 1990s, coinciding with the development of the Transtheoretical Model. The key psychometric validation study for the versions cited was published in 2000 (Hiller et al.).

Availability: The instrument information is publicly available online. The instrument can be found at the Habits Lab website: http://habitslab.umbc.edu/self-efficacy-scales/. Specific details regarding licensing fees or formal permissions for clinical use should be sought directly from the corresponding author or affiliated institution.

Reference’s

The foundational references supporting the development and validation of the Drug Abstinence Self-Efficacy Scales include:

1. DiClemente, C. C. (1986). Self-Efficacy and the addictive behaviors. Journal of Social and Clinical Psychology, 4, 302-315.
2. Velicer, W.F., DiClemente, C.C., Rossi, J. S., Prochaska, J. O. (1990). Relapse situations and self-efficacy: An integrative model. Addictive Behaviors, 15, 271-283.
3. Werch, C.E., & DiClemente, C.C. (1994). A multi-component stage model for matching drug prevention strategies and messages to youth stage of use. Health Education Research, 9, 37-46.
4. Hiller, M.L., Broome, K.M., Knight, K., and Simpson, D.D. (2000). Measuring self-efficacy among drug-involved probationers. Psychological Reports, 86, 529-538.
5. Velasquez, M.M., Maurer, G., Crouch, C., & DiClemente, C.C. (2001). Group Treatment for Substance Abuse: A Stages-of-Change Therapy Manual. New York, NY: Guildford Publications.
6. DiClemente, C.C., Nidecker, M., & Bellack, A.S. (2008). Motivation and the stages of change among individuals with severe mental illness and substance abuse disorders. Journal of Substance Abuse Treatment, 34(1), 25-35.
7. Nidecker, M., DiClemente, C.C., Bennett, M.E., & Bellack, A.S. (2008). Application of the Transtheoretical Model of change: Psychometric properties of leading measures in patients with co-occuring drug abuse and severe mental illness. Addictive Behaviors, 33(8), 1021-1030.

Items of the Self-Efficacy Scales- Drug Abstinence

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

Drug Abstinence Self-efficacy Scale 20 items

1. When I am in agony because of stopping or withdrawing from drug use.
2. When I have a headache.
3. When I am feeling depressed.
4. When I am on vacation and want to relax.
5. When I am concerned about someone.
6. When I am worried.
7. When I have the urge to use drugs to see what happens.
8. When I am being offered drugs in a social situation.
9. When I dream about using drugs.
10. When I want to test my will power over using drugs.
11. When I am feeling a physical need or craving for drugs.
12. When I am physically tired.
13. When I am experiencing some physical pain or injury.
14. When I feel like blowing up because of frustration.
15. When I see others using drugs at a bar or a party.
16. When I sense everything is going wrong for me.
17. When people I used to use drugs with encourage me to use drugs.
18. When I am feeling angry inside.
19. When I experience an urge or impulse to use drugs that catches me unprepared.
20. When I am excited or celebrating with others.

Drug Abstinence Self-efficacy Scale 12 items

1. When I am feeling depressed.
2. When I am concerned about someone.
3. When I am worried.
4. When I have the urge to use drugs to see what happens.
5. When I want to test my will power over using drugs.
6. When I am feeling a physical need or craving for drugs.
7. When I am physically tired.
8. When I am experiencing some physical pain or injury.
9. When I feel like blowing up because of frustration.
10. When I see others using drugs at a bar or a party.
11. When people I used to use drugs with encourage me to use drugs.
12. When I am excited or celebrating with others.