PSY 380 Lecture Notes - Lecture 9: Discriminant Validity, Convergent Validity, Factor Analysis
8 Mar 2016
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Index to extent to which test can be used to predict. Test and criterion are measured at two different time points and test. How to you establish it? standing/performance with respect to criterion score (measured now) should predict criterion (measured later) Sat scores ability to predict success in college (i. e. , gpa) How test scores range from low and high on tests and correlate it to low and high in gpa in college. Aiming for . 8, . 85 or better for correlation validity scores. Construct validity: provides evidence that a test taps what it is supposed to. Helps you judge appropriateness of inferences drawn from test scores. When you do not have a concrete critetion to compare it to. Most difficult to assess and establish, but also most important. First recall what a construct is. Second begin to measure and establish construct validity you must. Develop hypothesis about the nature and pattern of behaviors relevant to your construct.
