Equating Test Scores—A Maximum Likelihood Solution  

Oleh:

Lord, Frederic M.

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 20 no. 3 (Sep. 1955), page 193-200.
Topik: Test Scores; Likelihood Function; Likelihood Equations; Maximum Likelihood Estimates
Fulltext: Vol 20 No.3 Sept 1955 p.193-200.pdf (323.85KB)

Isi artikel

Certain problems of equating are discussed. The maximum likelihood solution is presented for the following special equating problem: Two tests,U andV, are to be equated, making use of a third “anchor” test,W. The examinees are divided into two random halves. TestsU andW are administered to one half; testsV andW are administered to the other half. It is assumed that any practice effect or other effect, exerted byU andV onW, is the same forU and forV.

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