Processes of Change Questionnaire – Drug Version (POC-D)
Measures the experiential and behavioral processes of change utilized by individuals attempting to modify their drug use behavior.
Scale Development & Technical Details
Scale Overview
The Processes of Change Questionnaire – Drug Version (POC-D) was developed by Alvaro Tejero, Joan Trujols, Eulalia Hernandez, Jose Perez de los Cobos, Miquel Casas (1997). It is designed to measure Processes of change in drug addiction recovery. The scale is intended for use with Individuals with drug use disorders.
Scale Structure
This instrument consists of 40 items organized into 10 factors/subscales: Consciousness Raising, Dramatic Relief, Environmental Re-evaluation, Self-Re-evaluation, Social Liberation, Contingency Management, Counter Conditioning, Helping Relationships, Self-Liberation, Stimulus Control.
| Factor / Subscale | Items | N |
|---|---|---|
| Consciousness Raising | 15,24,33,40 | 4 |
| Dramatic Relief | 3,11,19,29 | 4 |
| Environmental Re-evaluation | 5,14,22,31 | 4 |
| Self-Re-evaluation | 6,23,32,39 | 4 |
| Social Liberation | 4,13,21,38 | 4 |
| Contingency Management | 1,9,27,36 | 4 |
| Counter Conditioning | 8,17,26,35 | 4 |
| Helping Relationships | 2,10,18,28 | 4 |
| Self-Liberation | 12,20,30,37 | 4 |
| Stimulus Control | 7,16,25,34 | 4 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: 1 = Never, 2 = Seldom, 3 = Occasionally, 4 = Frequently, 5 = Repeatedly.
Scoring
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Not specified in source.
Administration
The scale is self-administered and typically takes approximately 10 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.