How does supply and demand effect your economy Half page essay
Please help
Economic btw

Apsychologist has developed a series of personality inventories and wants to determine if they are valid. one of the scales measures perfectionism, so he asks a colleague for advice on how to establish the validity of this scale. the colleague tells him that if he were to find a sample of people with personality disorder, these people would obtain high scores on a scale that measures perfectionism.

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Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?