The Diet Self Efficacy Scale (DIET-SE)

Author of Tool: 

Knäuper, B.

Key references: 

Stich, C., Knäuper, B., & Tint, A. (2009). A scenario-based measure of dieting self-efficacy: The DIET-SE. Assessment, 16, 16-30.

Primary use / Purpose: 

This scale assesses scenario-based eating temptations for a range of dieting situations.

Background: 

The Diet Self -Efficacy Scale DIET-SE consists of three factors. The first factor is called high caloric food temptations (HCF). It consists of four items describing situations in which the exposure to tempting high caloric food (e.g., cake or ice cream) might make it difficult to resist eating it. The second is called social and internal factors (SIF). It consists of four items describing situations in which social or internal factors, such as being with friends or feeling tired, might make it difficult to resist eating. The third factor is called negative emotional events (NEE). It consists of three items that describe situations in which negative emotional events might make it difficult to resist eating, for example, having had an upsetting argument with a romantic partner.

Psychometrics: 

Internal consistency: The internal consistency for the DIET-SE ranges from α = .82 to .87 in the studies reported in Stich et al. (2009). The internal consistency values for the three subscales range from α = .70 to .77 for HCF, α = .71 to .79 for SIF, and α = .75 to .79 for NEE. 
 
Test-retest reliability: Test-retest correlations for a 2- to 3-week interval are rtt = .83 for the DIET-SE scale, rtt = .75 for the HCF, rtt = .77 for the SIF, and rtt = .80 for the NEE subscale.
 
The DIET-SE represents a short, reliable, and valid scenario-based measure of dieting self-efficacy.

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