Experiments begin with random assignment to conditions, which produces equivalent groups. One group is subjected to the changed conditions and the other isn't. The other two necessary components of ...

In the second experiment, Carey took two groups of volunteers into rooms and asked one group to imagine eating 3 chocolates and the other, 30 chocolates. They were then asked to fill in a ...

Social scientists have taken inspiration from traditional medical or physical science lab experiments. In a typical drug trial, for instance, participants are randomly assigned into two groups. The ...