Psychometrics 2024 (100% Verified)

Definition of psychometrics correct answers branch of statistics applied to the measurement of human behavior What psychometricians do correct answers use a specialized set of statistical tools to create scientifically valid assessments of various behaviors Standardized test correct answers -structured - defined structure for administration PROCEDURES that are followed in the same manner by every professional who administers the test - defined scoring rules that are followed in same manner by every professional who administers the test - structured procedures for interpretation, comparing clients score to scores of a representative sample - data has been collected on large numbers of subjects using structured rules for administration and scoring Data for standardization are used correct answers to determine the average score, or the mean, and the standard deviation The mean and standard deviation from a standardized test are used correct answers to benchmark the performance of the client being tested Nonstandardized tests correct answers - do not have data from a standardization sample - typically created by individual clinicians who want to assess their clients - tests are often shared with other clinicians who may adapt them for use with their own clients - also called clinician-centered measures Nonstandardized tests are a step toward creating a standardized test because correct answers they assess constructs that are clinically meaningful Problems that can occur with nonstandardized measures correct answers -no scientifically supported basis for what constitutes a good or poor score -when administered by other clinicians, the score can be scored on their own criteria -may or may not be a valid way to measure a skill Why would it be necessary for a clinician to create a non standardized assessment ? correct answers -there are no valid standardized assessments of the clinical construct of interest When can a non standardized assessment be considered valid ? correct answers -when data has been collected to show that the test items and formats are effective in measuring a target skills. When data has been collected to verify the appropriateness of administration procedures, test times, and scoring of a non standardized assessment, you can correct answers have a reasonable degree of confidence that the test is suitable for the task