Experimental Design in Action
Author: Ronald J. Comer
Princeton University
Click the Arrow to start this activity
This video shows an experiment with human subjects whose findings suggest that the effectiveness of placebo drugs is partly a result of the patients' release of endorphins, their natural opioids. The implication is that, for some people, the expectation that a given treatment will soon be helpful causes them, without awareness, to release endorphins throughout their brain and body. In turn, the endorphins reduce their pain or help them to feel better in other ways.
1. In this experiment, the dependent variable was ______________.
2. An experiment, such as this study, is superior to correlational studies because ______________.
3. This is a double-blind study, which means ______________.
4. Placebos ______________.
Activity results are being submitted...