Table 1.

Wording of items

Item	Item phrasing (engagement scale)	Rev
18.	I am concerned that the price of food that is considered to be healthy may get too high
15.	I am concerned that there is not a wide selection of healthy food at the grocery stores where I usually shop
17.	I try to influence others (for instance family members and friends) to eat healthy food
13.	I require my college/university, workplace, etc. to offer healthy food
16.	I welcome any initiative aimed at promoting a healthy diet for children and adolescents
14.	I engage actively in initiatives aimed at promoting a healthier diet (for instance at my college/university)
12.	I get engaged in issues contributing to the provision of a healthier diet for most of the people in this country
19.	I would like to get involved in political issues directed at improving the population's diet
	Item phrasing (claims scale)
24.	I have confidence in the various diets that I read about in newspapers, magazines, etc.	x
21.	I am critical of the dietary information that I receive from various sources in society
20.	I am concerned that the dietary information that I read may not be based on science
25.	I believe my body tells me what it needs in terms of nutrients, regardless of researchers’ opinions about this	x
29.	I am confident that the media's presentation of new scientific findings concerning a healthy diet is correct	x
23.	I am familiar with the criteria for scientifically based content in health claims
22.	I often refer to newspapers and magazines if I discuss diet with others	x
26.	I am influenced by the dietary advice that I read about in newspapers, magazines, etc.	x
27.	I am confident that some of the methods within alternative medicine (such as health foods) provide me with credible dietary advice
28.	I find it hard to distinguish scientific nutritional information from non-scientific nutritional information	x
30.	I base my diet on information that I get from scientifically recognized literature (for instance, the journals published by the Norwegian Medical Association and the Norwegian Directorate of Health)

Reverse-scored items (rev) are indicated by ‘x’.