Professor MJ is concerned that the difference between an experimental drug group and a control, no-drug group may be because the experimental group expects to have a response to the capsule containing...

Extracted text: Professor MJ is concerned that the difference between an experimental drug group and a control, no-drug group may be because the experimental group expects to have a response to the capsule containing the drug. To create a placebo control condition, she randomly assigns participants to the control and experimental groups. removes the active ingredient from half the capsules and gives these to the control group. uses a double-blind condition in which only the researchers know which participants get the drug. increases the drug dose for the experimental group.