Friend Anti Dieting Scale (FADS)

Abstract

The Friend Anti Dieting Scale (FADS) is a concise, five-item psychometric instrument developed in 2006 by Thompson and colleagues. Its primary function is to quantify the degree to which an individual perceives their close friends as actively discouraging traditional dieting practices or restrictive weight loss behaviors. Unlike measures focusing on negative peer pressure toward thinness or body dissatisfaction, the FADS assesses positive, protective social support. This scale is vital in research exploring adolescent psychological well-being, eating disturbance, and the mitigating influence of supportive peer environments against sociocultural weight pressures.

Keywords

Psychometric scale, Peer influence, Anti-Dieting, Body Image, Eating Disturbance, Social Support, Adolescence, Weight Management, Prevention.

Authors

J. Kevin Thompson, H. Shroff, S. Herbozo, G. Cafri, J. Rodriguez, M. Rodriguez.

Purpose

The central purpose of the Friend Anti Dieting Scale (FADS) is to provide a quantitative measure of the protective role that peer relationships play in buffering adolescents against unhealthy weight control practices and pervasive body image concerns. Specifically, the FADS isolates and measures the perceived frequency and intensity of supportive communication from friends that actively discourages restrictive eating, extreme weight management, or traditional dieting behaviors.

This instrument was strategically developed to complement existing psychological measures that typically focus on negative peer influence, such as pressure to achieve an idealized thin body type. By capturing the unique variability in positive, health-focused peer environments, the FADS offers researchers a critical metric. Understanding this specific type of positive peer influence is essential for designing effective, targeted public health interventions aimed at the prevention of body dissatisfaction and associated eating disturbance.

Construct

The FADS is designed to measure the psychological construct known as Perceived Anti-Dieting Peer Support. This construct encompasses the individual’s belief regarding the extent to which their close social network advocates for body acceptance, critiques restrictive dieting, and generally promotes health and well-being irrespective of size, rather than focusing on weight loss or strict weight management.

The theoretical foundation posits that higher scores on the FADS indicate stronger perceived support, which should be negatively correlated with measures of body dissatisfaction and eating pathology. Functioning as a significant buffer, this perceived anti-dieting encouragement helps mitigate the adverse effects of broader sociocultural pressures that promote thinness and unhealthy compensatory behaviors.

Validity

Initial validation studies for the FADS were conducted on samples of adolescent girls, contrasting those categorized as overweight/obese with those of average weight. The results robustly supported the scale’s Construct Validity by demonstrating the anticipated pattern of correlations with established psychological variables.

Crucially, FADS scores exhibited significant inverse correlations with measures of body dissatisfaction and global eating pathology, confirming that greater perceived anti-dieting peer support aligns with healthier psychological outcomes concerning body image. Furthermore, the instrument successfully demonstrated Discriminant Validity by showing distinct patterns of association compared to scales designed to measure peer pressure for dieting or thinness, thereby confirming that the FADS measures a unique, protective construct.

Reliability

The Friend Anti Dieting Scale (FADS) has consistently demonstrated acceptable internal consistency, which is typical for a brief, single-factor measure. In the original 2006 validation study, the scale generally reported a Cronbach’s alpha coefficient ranging between .70 and .80 across diverse subsamples of adolescents. This range is considered adequate for research purposes, indicating sufficient homogeneity among the five items.

This strong internal reliability confirms that the items consistently converge to measure the intended latent construct of perceived anti-dieting support. The concise nature of the scale, combined with its focused measurement, enhances its practical utility in large-scale research settings where participant fatigue is a primary methodological consideration.

Factor Analysis

Both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) performed during the scale’s development confirmed a clear unidimensional factor structure. All five items of the FADS loaded strongly onto a single underlying factor, which represents the overall construct of perceived anti-dieting communication and support received from friends.

The successful retention of a single, coherent factor confirms the scale’s intended brevity and high degree of focus. This structure ensures that the FADS measures a cohesive set of supportive peer behaviors regarding weight and dieting that is empirically distinct from measures of peer pressure related to weight loss or pursuit of thinness.

Instrument

Test Type: Self-report psychometric instrument.

Format: Five items utilizing a 5-point Likert scale response format.

Language Available: English (Original development).

Population Group: Clinical and non-clinical populations focused on body image research.

Age Group: Primarily adolescents and young adults (typically 12 to 18 years old).

Population Details: The initial validation sample consisted of adolescent girls, specifically comparing groups classified as overweight/obese and those of average weight.

Test Methodology: Respondents are instructed to indicate the frequency of specific anti-dieting behaviors or statements made by their friends. Scoring involves summing the item scores; however, Item 5 must be reverse-scored to ensure that a higher total score accurately reflects a higher level of perceived anti-dieting support.

Keywords

Body image, Prevention, Social support, Adolescent psychology, Likert scale, Weight control, Eating pathology, Psychometrics.

Authors

Author ORCID Identifier: Not publicly provided in the source material.

Affiliation Email addresses: [email protected]; [email protected] (J. Kevin Thompson).

Correspondence Address: J. Kevin Thompson, Ph.D, Department of Psychology, University of South Florida, 4202 Fowler Ave, Tampa, FL 33620-8200.

Permissions & Fee and Test Year

The Friend Anti Dieting Scale (FADS) was first published and validated in 2006. For usage permissions, researchers are generally directed to contact the primary author, J. Kevin Thompson, Ph.D. The instrument is frequently made available for non-commercial academic research purposes.

The measure can be found online for review at: https://sites.google.com/site/bodyimageresearchgroup/measures/friend-anti-dieting-scale-fads.

Reference’s

• Thompson, J. K., Shroff, H., Herbozo, S., Cafri, G., Rodriguez, J. & Rodriguez, M. (2006). Relations Among Multiple Peer Influences, Body Dissatisfaction, Eating Disturbance, and Self-Esteem: A Comparison of Overweight/Obese and Average Weight Adolescent Girls. Journal of Pediatric Psychology, 32 (1), 24-29.

Items of the Friend Anti Dieting Scale (FADS)

Response Format: 1= Never, 2=Not much, 3=Sometimes, 4=Often, 5=Very.

1. How often do your friends discourage you from going on a diet?
2. How often do your friends talk about reasons why dieting can be dangerous?
3. How often do your friends encourage you to put on weight?
4. How often do your friends tell you not to diet because it’s unhealthy?
5. How often do your friends give you ideas on how to lose weight by eating certain foods or cutting down what you eat?*

* reverse scored