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Evaluating two morningness scales with item response theory


Zickar, MJ and Russell, SS and Smith, CS and Bohle, P and Tilley, AJ, Evaluating two morningness scales with item response theory, Personality and Individual Differences, 33, (1) pp. 11-24. ISSN 0191-8869 (2002) [Refereed Article]

DOI: doi:10.1016/S0191-8869(01)00131-3


Using a student sample (n=692) and an organization sample (n=180), we scrutinized two morning–evening orientation scales using item response theory (IRT) methods. We used IRT to compare the measurement precision of the Composite Scale (CS) and the Early/Late Preferences Scale (PS). The CS had slightly higher measurement precision at all ranges of orientations, except for extreme morning and evening orientations for which the PS had slightly higher precision. IRT item-level statistics were also computed to try to understand how morning-orientation items functioned. Items that asked questions about morning activities tended to be more discriminating indicators of morning-orientation than items that asked about evening or peak performance activities. Items that involved unpleasant activities were less frequently endorsed than items that involved neutral or enjoyable activities. Implications for measurement of morning–evening orientation are discussed.

Item Details

Item Type:Refereed Article
Keywords:morningness, item response theory, shiftwork
Research Division:Commerce, Management, Tourism and Services
Research Group:Strategy, management and organisational behaviour
Research Field:Organisational behaviour
Objective Division:Law, Politics and Community Services
Objective Group:Work and labour market
Objective Field:Workplace safety
UTAS Author:Bohle, P (Professor Philip Bohle)
ID Code:138825
Year Published:2002
Web of Science® Times Cited:31
Deposited By:TSBE
Deposited On:2020-05-01
Last Modified:2020-05-01

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