Climate Change—Model Inventory (CC-MI)
A comprehensive multidimensional inventory designed to assess predictors and levels of climate change anxiety, including knowledge, personal experience, risk perception, worry, media exposure, and generalized anxiety.
Scale Development & Technical Details
Scale Overview
The Climate Change—Model Inventory (CC-MI) was developed by Zahra Asgarizadeh, Robert Gifford, Lauren Colborne (2023). It is designed to measure Climate Change Anxiety and its predictors. The scale is intended for use with Adults (18 years and older).
Scale Structure
This instrument consists of 60 items organized into 7 factors/subscales: Climate Change Knowledge, Personal Experience of Climate Change, Generalized Anxiety Disorder, Climate Change Risk Perception, Climate Change Worry, Media Exposure About Climate Change Information, Climate Change Anxiety.
| Factor / Subscale | Items | N |
|---|---|---|
| Climate Change Knowledge | 1,2,3,4,5,6,7,8,9,10,11 | 11 |
| Personal Experience of Climate Change | 12,13,14 | 3 |
| Generalized Anxiety Disorder | 15,16,17,18,19,20,21 | 7 |
| Climate Change Risk Perception | 22,23,24,25,26,27,28,29 | 8 |
| Climate Change Worry | 30,31,32,33,34,35,36,37,38,39 | 10 |
| Media Exposure About Climate Change Information | 40,41,42,43,44,45,46,47 | 8 |
| Climate Change Anxiety | 48,49,50,51,52,53,54,55,56,57,58,59,60 | 13 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: Knowledge: 0 = Incorrect, Knowledge: 1 = Correct, Experience/Worry/Anxiety: 1 = Never, Experience/Worry/Anxiety: 5 = Almost always, GAD: 1 = Never, GAD: 4 = Nearly every day, Risk Perception: 1 = Not concerned/serious/likely at all, Risk Perception: 7 = Very concerned/serious/likely, Media Exposure: 1 = Never, Media Exposure: 9 = More than 10 times per day.
Scoring
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Total scores range from 0 to 21. Interpretation guidelines:
- Minimal GAD Anxiety (GAD Subscale): 0 – 4
- Mild GAD Anxiety (GAD Subscale): 5 – 9
- Moderate GAD Anxiety (GAD Subscale): 10 – 14
- Severe GAD Anxiety (GAD Subscale): 15 – 21
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Cronbach's alpha ranges from 0.85 to 0.95 across subscales.
Administration
The scale is self-administered and typically takes approximately 15 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.