Table 1.

Measurement

	Definition
Demographics
Gender	Biological sex
Age	Length of time in years that a person has lived
Education	Level of schooling from which one graduated
Occupation	The primary type of employment one is currently engaged in for livelihood
Marital status	Whether one is currently in a married relationship
Number of household members	The total number of family members currently residing together
Monthly household income	The aggregate total of the monthly earnings of all household members
	Items	Source	Cronbach’s α
Food literacy
Knowledge	How much do you know about each of the following items? traditional food certification; Korean industrial standard mark for processed food; hazard analysis critical control point; country of origin; certified organic; geographic indication; traceability; good agricultural practices; genetically modified organismanimal welfare certification	Choi et al. (2010)
Attitude	1. I tend to consider calories and nutritional content when I eat food. 2. I try to eat the five basic food groups in every meal for nutritional balance. 3. I eat a variety of foods for proper nutrition. 4. I eat lots of vegetables, fruits, and whole grains.	Song and Yoo (2008)	0.702
Behavior	Have you purchased foods with the following indicators within the past year? traditional food certification; Korean industrial standard mark for processed food; hazard analysis critical control point; country of origin; certified organic; geographic indication; traceability; good agricultural practices; animal welfare certification	Choi et al. (2010)
Intention to pay a higher price for healthier food	Are you willing to pay a higher price for healthier food?