Open AccessITEM SAMPLING IN TEST THEORY AND IN RESEARCH DESIGN
Author(s) -
Lord Frederic M.
Publication year - 1965
Publication title -
ets research bulletin series
Language(s) - English
Resource type - Journals
eISSN - 2333-8504
pISSN - 0424-6144
DOI - 10.1002/j.2333-8504.1965.tb00968.x
Subject(s) - sampling (signal processing) , sampling theory , test (biology) , sampling design , computer science , test design , statistics , research design , test theory , econometrics , reliability engineering , psychology , mathematics , sample size determination , test method , engineering , psychometrics , biology , paleontology , population , demography , filter (signal processing) , sociology , computer vision
New and less new concepts and results in the item‐sampling model for mental test theory are summarized. It is shown that certain research studies–typically those concerned with group means–could use item‐sampling methods to improve their efficiency of experimental design. Various sampling error formulas are derived, making it possible to determine whether and to what extent various uses of item sampling will increase the information gained by the research worker.