This study examined the psychometric properties of the Anti-fat Attitudes S
cale (AFAS), a 5-item instrument developed by the authors to measure negati
ve attitudes toward overweight individuals. A total of 4 studies were condu
cted among Canadian adolescents (n = 1,452) and university students (n = 42
4). Results suggested that the AFAS possessed a unidimensional factor struc
ture and satisfactory reliability for both men and women. As predicted, men
obtained higher scores than women on the AFAS, and antifat attitudes were
positively associated with authoritarianism, homonegativity, and political
conservatism. Participants who were overweight had lower scores on the AFAS
than participants who were thin or average weight. Responses on the AFAS d
id not appear to be contaminated by social desirability bias.