Independent Variable:This is the variable that is manipulated or changed in an experiment. In this case, it would be the type of food being consumed.
Dependent Variable:The dependent variable is what is being measured or observed in an experiment and can be influenced by the independent variable. Here, it would be the ability to recall dreams.
Control Group:The control group is a group in an experiment where no changes are made and serves as a baseline for comparison. In this study, there could be a control group that does not consume any specific foods before sleeping and their dream recall abilities would be compared with those who do consume certain foods.