Types of Test Designs

In designing an intelligence assessment, I may want to know the level of difficulty that someone is capable of solving. In this case, I would probably look at whether a person is able to solve a particularly difficult puzzle or not. This would be considered a power test. In this context power refers to how well a measurement can differentiate … Read More

How Do Psychologists Define Variables?

  With any psychological question, what we are really trying to establish is better understanding of a property. We want to know about properties like happiness, depression, aggression, intelligence, etc. The problem with wanting to know about psychological properties is that they can be especially difficult to measure. In other sciences, it can often seem easy to determine how to … Read More