The Reliability of Speeded Tests  

Oleh:

Gulliksen, Harold

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 15 no. 3 (Sep. 1950), page 259-269.
Topik: Pure Speed Test; Power Test; Computing Mu and Su2
Fulltext: The Reliability of Speeded Tests.pdf (417.44KB)

Isi artikel

Some methods are presented for estimating the reliability of a partially speeded test without the use of a parallel form. The effect of these formulas on some test data is illustrated. Whenever an odd-even reliability is computed it is probably desirable to use one of the formulas noted in Section 2 of this paper in addition to the usual Spearman-Brown correction. Since the formulas given here involve the mean and the standard deviation of the “number unattempted score,” a method is given in Section 4 for computing this mean and standard deviation from item analysis data. If the item analysis data are available, this method will save considerable time as compared with rescoring answer sheets.

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