Prediction markets allow people to predict the probability of events and make money on accurate predictions. Examples include Intrade, Betfair, and Hollywood Stock Exchange. They use collective betting to reward accurate predictions and punish inaccurate ones. Some use imaginary money, but studies show they can still be successful. Prediction markets date back to the 1940s […]
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 […]
A predicative adjective modifies the subject of a sentence and is found after a linking verb. It is not confused with a predicative nominative, which renames the subject with a noun. Linking verbs indicate the presence of a predicative adjective. A predicative adjective is used as a subject complement within a sentence, serving to describe […]
