Developing and Evaluating Product Messaging

The number of products in a participant's shopping basket that contain red meat.

The percentage of products in a participant's shopping basket that contain red meat.

Total grams of saturated fat of products in a participant's shopping basket. This will be calculated by adding together the total saturated fat from each product in the participant's shopping basket. Saturated fat for each product will come from the product's nutrition facts panel. All products in the store are real life products that have designated nutrition facts panels.

Total grams of sodium of products in a participant's shopping basket. This will be calculated by adding together the total sodium from each product in the participant's shopping basket. Sodium for each product will come from the product's nutrition facts panel. All products in the store are real life products that have designated nutrition facts panels.

Total calories of products in a participant's shopping basket. This will be calculated by adding together the total calories from each product in the participant's shopping basket. Calories for each product will come from the product's nutrition facts panel. All products in the store are real life products that have designated nutrition facts panels.

Perceived healthfulness of eating red meat. Likert response options are on a 1 to 5 scale, with higher scores representing a higher perceived healthfulness of eating red meat.

Perceived risk of colon and rectal cancer from eating red meat. Likert response options are on a 1 to 5 scale, with higher scores representing a higher perceived risk of colon and rectal cancer from eating red meat.

Perceived risk of environmental harms from eating red meat. Likert response options are on a 1 to 5 scale, with higher scores representing a higher perceived risk of environmental harms from eating red meat.

Thinking about the health harms of food products while completing the shopping task. Likert response options are on a 1 to 5 scale, with higher scores representing a higher amount of thinking about health harms of food products.

Thinking about the environmental harms of food products while completing the shopping task. Likert response options are on a 1 to 5 scale, with higher scores representing a higher amount of thinking about the environmental harms of food products.

Thinking about the price of food products while completing the shopping task. Likert response options are on a 1 to 5 scale, with higher scores representing a higher amount of thinking about the price of food products.

Perceived healthfulness of specific red meat products (burgers, pepperoni pizza, and deli ham). Likert response options are on a 1 to 5 scale, with lower scores representing worse for health and higher scores representing better for health.

Perceived environmental harm of specific red meat products (burgers, pepperoni pizza, and deli ham). Likert response options are on a 1 to 5 scale, with lower scores representing worse for the environment and higher scores representing better for the environment.

Perceived cost of the burger product. Likert response options are on a 1 to 5 scale, with lower scores representing less expensive and higher scores representing more expensive.

Perceived cost of the pizza product. Likert response options are on a 1 to 5 scale, with lower scores representing less expensive and higher scores representing more expensive.

Perceived cost of the ham product. Likert response options are on a 1 to 5 scale, with lower scores representing less expensive and higher scores representing more expensive.

Intention to reduce red meat consumption in the next 30 days. Likert response options are on a 1 to 5 scale, with higher scores representing a higher intention to reduce red meat consumption in the next 30 days.

Support of policy for taxes on red meat products in the U.S. Likert response options are on a 1 to 5 scale, with higher scores representing a greater deal of support. Those who indicated '4' or '5' were assumed to more strongly agree to support a red meat product tax. This measure reports the percentage of those with a response of '4' or '5'.

Support of policy for health warning labels on red meat products in the U.S. Likert response options are on a 1 to 5 scale, with higher scores representing a greater deal of support. Those who indicated '4' or '5' were assumed to more strongly agree to support a health warning label. This measure reports the percentage of those with a response of '4' or '5'.

Support of policy for environmental warning labels on red meat products in the U.S. Likert response options are on a 1 to 5 scale, with higher scores representing a greater deal of support. Support of policy for taxes on environmental warning labels in the U.S. Likert response options are on a 1 to 5 scale, with higher scores representing a greater deal of support. Those who indicated '4' or '5' were assumed to more strongly agree to support an environmental warning label. This measure reports the percentage of participants with a response of '4' or '5'.

Acceptability of the online grocery store. Likert response options are on a 1 to 5 scale, with higher scores representing a higher amount of agreement.

Acceptability of the online grocery store is measured using 3 items adapted from Waterlander et al., 2011. Responses to the 3 items will be averaged to create an acceptability score sum ranging from 3-15 then divided by the total number of questions asked (n = 3).

Prompt: Say whether you agree or disagree with the following statements.

I could easily find all of the food and beverages I was looking for in the online grocery store.

There were enough food and beverage options in the online grocery store.

This online grocery store felt like a real online grocery store.

Waterlander WE, Scarpa M, Lentz D, Steenhuis IHM. The virtual supermarket: an innovative research tool to study consumer food purchasing behavior. 2011;11:589. DOI: 10.1186/1471-2458-11-589.

Ease of use of the online grocery store. Likert response options are on a 1 to 5 scale, with higher scores representing more agreement that the online grocery store is easy to use.