Cookie Science 4: Cookie ethics. There are important things to keep in mind when your experiments include people — even if you’re just asking them questions.
Cookie Science 5: ‘Blinding’ your subjects. When you’re working with people in an experiment, you need to make sure your participants do not know the test’s conditions.
Cookie Science 6: Baking it up. Carrying out a good experiment means keeping all but one variable as constant as you can.