Format

Send to:

Choose Destination
See comment in PubMed Commons below
J Sch Psychol. 2013 Apr;51(2):217-29. doi: 10.1016/j.jsp.2012.12.003. Epub 2013 Jan 13.

Reliability of multi-category rating scales.

Author information

  • 1Texas A&M University at College Station, USA. rparker@tamu.edu

Abstract

The use of multi-category scales is increasing for the monitoring of IEP goals, classroom and school rules, and Behavior Improvement Plans (BIPs). Although they require greater inference than traditional data counting, little is known about the inter-rater reliability of these scales. This simulation study examined the performance of nine reliability indices applied to six multi-category scales of different gradations (2, 3, 5, 7, 10, and 15 points) all derived from the same quasi-continuous (1-30) data. The researchers find that each index behaves differently and requires its own interpretation; there is no one-best reliability indices as most indices are scale-dependent. Finally, index values do not remain constant when more categories are collapsed to fewer. New guidelines are needed for optimal methods of obtaining reliability with ordinal scales.

Copyright © 2012. Published by Elsevier Ltd.

PMID:
23481086
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk