Rudd Center for Food Policy and Obesity
Yale University Rudd Center for Food Policy and Obesity Yale University Rudd Center for Food Policy and Obesity

Tools for Researchers

Part of our mission is to support the work of researchers investigating weight bias. Below, we provide a number of downloadable measures that may be used in studies assessing weight bias and intervention effectiveness. The citation information is listed on the measures.


The Implicit Associations Test is a timed, word categorization task that we use both in research and clinical presentations.  The tests are designed to measure implicit attitudes towards obesity.  A full description of the IAT can be found in our publications using this measure (see Teachman & Brownell, 2001).
The IAT has been used extensively in the field of social psychology.  The following versions of the IAT were developed by our group and may be used by other researchers.

Download Instructions in Powerpoint or Instructions in Pdf format.


There are other measures that can be used to assess weight bias and negative attitudes toward obese individuals. Here are some examples of published self-report measures that you may want to consult if you are doing research in this area:

1) The Anti-fat Attitudes Scale
Original reference:
Morrison TG, O’Connor WE. Psychometric properties of a scale measuring negative attitudes toward overweight individuals. The Journal of Social Psychology. 1999; 139: 436-445.

2) The Antifat Attitudes Test
Original reference:
Lewis RJ, Cash TF, Jacobi L, Bubb-Lewis C. Prejudice toward fat people: The development and validation of the Antifat Attitudes Test. Obesity Research. 1997; 5: 297-307.

3) The Fat Phobia Scale (Short form)
Original reference:
Bacon JG, Scheltema KE, Robinson BE. Fat phobia scale revisited: the short form. International Journal of Obesity. 2001; 25: 252-257.

4) The Stigmatizing Situations Inventory
Original reference:
Myers A, Rosen JC. Obesity stigmatization and coping: relation to mental health symptoms, body image, and self-esteem. Int J Obesity Relat Metab Disord. 1999; 23: 221-30.


Assessing Weight Bias with Validated Measures
If you have additional questions about measurement of weight bias, please contact us with your question, and we will do our best to help.