Among the most common types of experiments are comparative studies that contrast outcomes under different conditions such as male versus female, placebo versus drug, or before versus after treatment.

We humans are comparison creatures. We are constantly measuring ourselves against other people. This attribute may have evolved as a means of helping us fit into the social hierarchy of the cultures ...

Theodore Roosevelt said the following about comparison, “Comparison Is the Thief of Joy.” When we compare ourselves to others, we rob ourselves of our own happiness. Through comparison, we either feel ...