Psychology began back in the days of Socrates and Plato. This was more than two thousand years ago. In the Middle Ages “tests” were developed to determine if someone was possessed by the devil. If someone was found to be associated with the devil, they were killed. The 1500s-1700s was the birth of modern science. The ideas of Copernicus and Sir Isaac Newton led to the modern psychology of the 1800s. Human behavior and …showed first 75 words of 1135 total…

…showed last 75 words of 1135 total…related doesn’t mean that one causes the other. If you find a positive correlation between students’ grades and their level of involvement in extracurricular activities, it doesn’t mean that earning high grades causes on to participate in activities. It also doesn’t mean that participating in extracurricular activities causes higher grades. It may just mean that people who earn high grades want to succeed in other things so they participate in those activities.