PSY 113 Lecture Notes - Lecture 18: Rorschach Test, Thematic Apperception Test, Lewis Terman
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Monday, april 15, 2019 (review of psychological assessment) Valid = the test measures what it is supposed to measure. Important: a valid test is necessarily reliable, while a reliable test may not be valid (ex/ horoscopes & fortune-telling) Example: length of line, ruler is reliable but not valid because the measurement is wrong: standardized with a representative population. Standardization procedures provide the norms for interpreting results. Suppose you take a math test and receive a score of 37 points. The mean of most standardized tests is 100 points and standard deviation is 15. You need to know what most people scored. 68% of people score one standard deviation above and one standard deviation below points the mean. **standardization of a psychological test allows you to: answer: interpret the scores** Types of psychological assessment: self-reports, problems with this type of testing? i.
