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THE UCLA BODY MATRICES II


THE UCLA MATRICES OF WOMEN
32 images varying in Breast Size (4 levels) and Body Fat (8 levels)
1. Numbered Image Version; Bathing Suits click
2. Scaled Version; Bathing Suits click

THE UCLA MATRICES OF MEN
28 images varying in Body Fat (4 levels) and Muscularity (7 levels)
1. Numbered Image Version; Pants click
2. Numbered Image Version; Shorts click
3. Scaled Version; Pants click
4. Scaled Version; Shorts


WHAT ARE THE MATRICES?


Frederick, D.A., & Peplau, L.A. (2007). [View Powerpoint]
The UCLA Body Matrices II: Computer-generated images of men and women varying in body fat and muscularity/breast size to assess body satisfaction and preferences.
Society for Personality and Social Psychology, Memphis, TN.


One of the most popular ways to assess body satisfaction and body type preferences is to present participants with silhouette images of men and women. Participants typically indicate their current body and their ideal body. The primary limitations of these forms are that most: 1) Present crude hand-drawn images of men or women and/or 2) Only manipulate one physical feature (e.g., muscularity), or confound two features (e.g., breast size and body fat; muscularity and body fat).

The UCLA Body Matrices II were designed to overcome these limitations. The UCLA Matrix of Women presents a matrix of 32 computer-generated images that vary systematically in Breast Size (4 levels) and Body Fat (8 levels). The UCLA Matrix of men presents 28 images that vary systematically in Body Fat (4 levels) and Muscularity (7 levels). These can be presented in either a "Numbered Image Version" where participants simply choose one of the images, and a "Scaled Version" where participants. Our original UCLA Body Matrices I had fewer images and were presented at the Society for Personality and Social Psychology (Mulrenan et al., 2006).

We currently have the following versions available. There are two options for the men: With pants or with shorts. I have been using the version with pants to focus primarily on concerns with upper body, but the version with shorts may be useful to researchers. It is our intention to present the validity data on the women's matrix and the pants version of the matrices at SPSP in January 2007. The self-ratings on original matrices were significantly correlated with BMI, appearance evaluation, and breast size satisfaction (Mulrenan et al., 2006). I have no immediate plans to create scales that manipulate other features of interest (e.g., muscularity in women; waist-to-hip ratio), but that remains a possibility for the future.


INSTRUCTIONS FOR USE


My goal was to create a scale that could be easily used in mass testing situations. The images can be printed out on 8.5 X 11 sheets of paper. I highly recommend printing them out in black and white on a laser printer. Some high quality photocopiers are acceptable (when photocopying, using the lightest possible setting generally yields the best results.