Common part for all 8 groups:
Year of birth, sex, ethnicity, do they prefer healthy food in their everyday life
8 groups - 8 different interfaces (each one with 5-7 choices) so around 40-50 recipes
Group 1: No effect Group 2: Decoy effect Group 3: Position effect Group 4: Explanations Group 5: Decoy + Position effect Group 6: Decoy + Explanations Group 7: Position effect + Explanations Group 8: Decoy + Position + Explanations
H1: Decoy effect will increase the choice of the target item(healthy recipe) H2: Position effect will increase the choice of the target item(healthy recipe) H3: Explanations will increase the choice of the target item(healthy recipe) H4: Decoy and position effect in combination will increase the choice of the target item(healthy recipe) more than they did individually H5: Decoy and explanations effect in combination will increase the choice of the target item(healthy recipe) more than they did individually H6: Explanations and position effect in combination will increase the choice of the target item(healthy recipe) more than they did individually H7: Decoy effect, position effect and explanations in combination will increase the choice of the target item(healthy recipe) more than they did individually, and more than they did when only 2 of them were combined.
Explanations will be based on healthy/unhealthy ingredients in the recipes: This recipe is rich with proteins and iron. / This recipe contains a lot of sugar and fat.