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Mobility Inventory for Agoraphobia
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About Mobility Inventory for Agoraphobia
Scale Name
Mobility Inventory for Agoraphobia
Author Details
DL Chambless, GC Caputo, SE Jasin, EJ Gracely, C Williams
Translation Availability
Not Sure
Background/Description
The Mobility Inventory for Agoraphobia (MIA), developed by Chambless and colleagues in 1985, is a self-report measure designed to assess the degree of agoraphobic avoidance in individuals. This tool evaluates the severity of avoidance behaviors and helps differentiate between agoraphobia alone and agoraphobia with panic disorder. The MIA is particularly helpful for clinicians working with individuals who experience extreme discomfort in various public settings, as it targets specific situations that might trigger avoidance or fear.
The inventory assesses two types of avoidance behaviors:
- Avoidance when accompanied by a trusted person.
- Avoidance when alone.
By measuring both types, the MIA provides insight into the individual’s dependence on companions in avoiding distressing situations.
Administration, Scoring and Interpretation
- Obtain the MIA: You can obtain the MIA from various sources, including online databases, research institutions, or by contacting the author directly. Ensure you have the most recent version of the inventory.
- Explain the Purpose of the Inventory: Clearly explain to the participant that the MIA is a self-report questionnaire designed to assess their levels of anxiety and avoidance in various situations. Reassure them that their responses are confidential and will be used solely for assessment purposes.
- Provide Instructions: Provide clear and concise instructions on how to complete the MIA. Explain that they should rate their level of anxiety and avoidance for each situation on a scale of 0 to 5, where 0 indicates no anxiety or avoidance, and 5 indicates severe anxiety or avoidance.
- Administer the Inventory: Allow the participant to complete the MIA independently. You may choose to administer it in person, or you can provide the participant with a copy to complete at home and return later.
Reliability and Validity
- Reliability: The MIA has demonstrated high internal consistency and test-retest reliability, making it a stable and reliable measure for repeated assessments.
- Validity: The MIA has shown good convergent and discriminant validity, with high correlations between MIA scores and clinical observations of agoraphobia severity.
Available Versions
Multiple-Items
Reference
Chambless, D. L., Caputo, G. C., Jasin, S. E., Gracely, E. J., & Williams, C. (1985). The mobility inventory for agoraphobia. Behaviour research and therapy, 23(1), 35-44.
Important Link
Scale File:
Frequently Asked Questions
What does the Mobility Inventory for Agoraphobia (MIA) measure?
The MIA measures the extent of avoidance behaviors in individuals with agoraphobia, both when alone and with a companion.
Who should use the MIA?
The MIA is designed for clinicians treating individuals with agoraphobia or panic disorders, especially those incorporating exposure-based therapies.
Is the MIA culturally adaptable?
Although developed in a specific cultural context, the MIA has been successfully adapted in various countries, but translations may require validity testing for cultural sensitivity.
How long does the MIA take to complete?
The inventory typically takes about 10–15 minutes to complete.
Can the MIA be used for diagnosis?
While useful in assessing severity, the MIA should not be used for standalone diagnosis; it is intended to complement clinical assessments.
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