Cathryn conducted an experiment that involved administering an anti-anxiety drug to people with a history of Generalized Anxiety Disorder. Participants received 0 mg, 50 mg, or 100 mg of the drug. Which participants received a placebo?

In an experiment, a researcher manipulates one variable to see how it affects a second variable. The second variable, which is observed for any possible effects, is called the __________ variable

a) dependent b) control c) independent d) placebo

Choose any two methods that psychologists use to learn about the functions of the brain. Describe the method, how it works, and the type of information we can learn from it

What will be an ideal response?