Correction for Unreliability of Multifactor Measures : Comparison of Alpha and Parallel Forms Approaches  

Oleh:

Schmitt, Neal ; Mullins, Morell E. ; Rogers, William M.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Organizational Research Methods vol. 5 no. 2 (2002), page 184-199.
Topik: CORRECTIONS; studies; statistical analysis; reliability; organizational behaviour; measurement
Fulltext: 184.pdf (124.77KB)

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Perpustakaan Pusat (Semanggi) Nomor Panggil: OO3.3 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Coefficient alpha is a widely used and useful index of reliability, but it provides an inappropriate estimate of reliability when used with multidimensional composites. The problematic nature of this inappropriate usage varies primarily as a function of the prominence of distinct factors in a composite and to a lesser extent as a function of the length of the measure. Implications for use of coefficient alpha estimates of reliability as the basis for correcting observed correlations for unreliability are described for a variety of levels of multidimensionality and measure length. Researchers should correct for unrealibility to estimate construct interrelationships but must exercise are as to how they conceptualize errors of measurement and how they estimate reliability.

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