The development and validation of the weight management support inventory

Area of Science:

• Behavioral Science
• Health Psychology
• Clinical Psychology

Background:

• Social support is crucial for successful weight management.
• Existing measures may not adequately capture the nuances of weight management support.
• A validated instrument is needed to assess specific types of support.

Purpose of the Study:

• To develop and validate the Weight Management Support Inventory (WMSI).
• To assess social support specifically for weight management.
• To quantify the frequency and helpfulness of various support behaviors.

Main Methods:

• Two stages of development with adult samples (n=348, n=237).
• Confirmatory factor analysis to establish factor structure.
• Assessing internal consistency, construct, convergent, and discriminant validity.

Main Results:

• The WMSI demonstrated good internal consistency and a clear factor structure.
• The inventory showed strong evidence of construct, convergent, and discriminant validity.
• The WMSI effectively quantifies four subtypes of social support: emotional, instrumental, informational, and appraisal.

Conclusions:

• The Weight Management Support Inventory (WMSI) is a validated and reliable measure.
• The WMSI can be used in research to examine baseline support and intervention effects.
• Clinicians can use the WMSI to personalize weight management treatment plans.