Scale-Description

The DEAS-25 is a brief self-report scale designed to assess dysfunctional attitudes and behaviors related to eating. It consists of 25 questions that address different aspects of eating, such as body perception, food-related concerns, restrictive behaviors, and the use of purging methods. Responses are given on a Likert scale, typically ranging from 5 to 7 points, from “Strongly Disagree” to “Strongly Agree.”

Data Analysis and Usage

The DEAS-25 is primarily used in clinical and research settings to evaluate the frequency and intensity of dysfunctional eating attitudes. The data collected using this scale are usually analyzed through statistical methods, such as factor analysis, to identify the underlying components of disordered eating attitudes. Researchers may also use the DEAS-25 to examine the relationship between disordered eating behaviors and other psychological variables, such as self-esteem and depression.

Purpose

The main objective of the DEAS-25 is to provide a valid and reliable tool for assessing the severity and range of disordered eating attitudes and behaviors, especially in populations at risk for developing eating disorders. This tool can be used for both diagnostic purposes and for evaluating the effectiveness of interventions.

Calibration

Calibration of the DEAS-25 involves investigating the validity and reliability of the scale across different populations. This is typically achieved through statistical methods, such as assessing internal consistency (e.g., Cronbach’s alpha) and structural validity (e.g., confirmatory factor analysis). The resulting values are used to confirm that the scale accurately and consistently measures disordered eating attitudes.

Bibliography

Lacroix, E., & Bourdet-Loubère, S. (2007). “Disordered Eating Attitude Scale (DEAS-25): Development and Validation of a Self-report Questionnaire”. Journal of Behavioral Medicine, 30(3), 243-250.

Garner, D. M., Olmsted, M. P., & Polivy, J. (1983). “Development and validation of a multidimensional eating disorder inventory for anorexia nervosa and bulimia.” International Journal of Eating Disorders, 2(2), 15-34.

Van Strien, T., Frijters, J. E., Bergers, G. P., & Defares, P. B. (1986). “The Dutch Eating Behavior Questionnaire (DEBQ) for assessment of restrained, emotional, and external eating behavior.” International Journal of Eating Disorders, 5(2), 295-315.