Reliability Formulas for Noncompleted or Speeded Tests  

Oleh:

Guttman, Louis

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 20 no. 2 (Jun. 1955), page 113-124.
Topik: Reliability Formulas; Tests
Fulltext: Vol 20 No 2 June 1955 p.113-124.pdf (527.57KB)

Isi artikel

New formulas are developed to give lower bounds to the reliability of a test, whether or not all respondents attempt all items. The formulas apply in particular, then, to completed tests, pure speed tests, pure power tests, and any mixture of speed and power. For the case of completed tests, the formulas give the same answer as certain standard ones; for noncompleted tests the formulas give a correct answer where previous standard formulas are inappropriate. The formulas hold both in the sense of retest reliability and of parallel tests.

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