PSYC 3020 Study Guide - Takers, Face Validity, Toyota Electronic Modulated Suspension
Document Summary
10 tests and measures chapter 12. How do we assess the psychometric quality of a test: conducting the pilot test, pilot test: a scientific investigation of a new test"s reliability and validity for its specified purpose, setting up- determining the sample is important. Want to make sure its similar to who is taking the test. Want sample to be big and it be as representative as possible of actual test takers. Setting also important, should be similar: conducting, conducting quantitative analysis, quantitative item analysis: statistical analysis of the responses that test takers gave to individual test questions. Item difficulty: item difficulty: the percentage of test takers who answer a question correctly. Item discrimination **: discrimination index: a statistic that compares the performance of those who made very high test scores with the performance of those who made very low test scores on each item. Item-total correlations: correlation between scores on a single item and overall test scores.
