Rajagopal, L. (2007). Development of the food attitude behavior openness scale (FABOS) [Unpublished doctoral dissertation]. University of Nebraska-Lincoln.

For further validity testing, see also: Rajagopal, L., & Hamouz, F. L. (2009). Use of food attitudes and behaviors in determination of the personality characteristic of openness: A pilot study. International Journal of Intercultural Relations, 33(3), 254-258. https://doi.org/10.1016/j.ijintrel.2009.02.004