interventions? The three Constance interventions are: a) giving the people two glasses of milk before they eat; b) serving the same food for the three days regardless of how much the people eat; and

In your experiment, the independent variable is the consumption of milk before dinner, as this is the factor being manipulated to observe its effect on the amount of food consumed. The dependent variable is the amount of food consumed during dinner, as this is the outcome you are measuring and comparing based on whether the participants drank milk or not. The three constants (also referred to as control variables) are: 1. The same five participants, to ensure consistent individual eating habits and preferences remain constant during the experiment. 2. The same type and amount of food served for dinner on each of the six days, to eliminate variations in food choice and portion size as potential influencing factors. 3. Maintaining the same eating time every day for all participants, to ensure that their hunger levels are consistent, and time of day does not affect the results.