Feeling thermometers versus 7-point scales:Which are better?  

Oleh:

Alwin, Duane F.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Sociological Methods & Research (SMR) vol. 25 no. 03 (Feb. 1997), page 318-340.

Ketersediaan

Perpustakaan PKPM Nomor Panggil: S28 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

This study addresses the issue of the relation between the number of response categories used in survey questions and the quality of measurement. Several hypotheses from relevant theory and research, are tested through a comparison between 7 and 11-category rating scales used in the 1978 Quality of Life Survey. One hypothesis from information theory, that rating scales with more response categories transmit a greater amount of information and are therefore inherently more precise in their measurement, is strongly supported. A second hypothesis, that questions with greater numbers of response categories are more vulnerable to systematic measurement errors or shared method variance. is rejected. This study supports the conclusion that questions with more categories are both more reliable and more valid.

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