Face validity is a metric used to assess the value of an experiment or test based on personal experience. It is used to determine whether a test is ethical and whether it measures what it is supposed to. Experts in a field may disagree on the validity of a test, so peer review is important. […]
External validity is the likelihood that results obtained from a sample group apply to the entire population in various situations and time frames. Researchers strive for high external validity to predict future outcomes accurately. However, achieving external validity can be challenging, and researchers should note “threats to external validity” to improve future studies. External validity […]
Predictive validity measures how well a test predicts future performance by comparing it to known criteria. College entrance tests are an example, but there are weaknesses, including missing data and potential bias. Statistical significance is difficult to calculate, but it is commonly used in psychological studies and by companies to evaluate prospective employees. Predictive validity […]
