Abstract
Children and adolescents with ADHD often have difficulties with organization, time management, and planning skills, and these skills are a common target of intervention. A limited array of tools for measuring these abilities in youth is available, and one of the most prominent measures is the Children’s Organizational Skills Scale (COSS). Although the COSS fills an important need, a replication of the COSS factor structure outside of initial measure development has not been conducted in any population. Given that the COSS is frequently used in ADHD research, the current study evaluated the factor structure of the parent-rated COSS in a sample (N = 619) of adolescents with ADHD. Results indicated that the original factor structure could be replicated, although the use of item parcels appeared to affect model fit statistics. An alternative bi-factor model was also tested that did not require the use of parcels, with results suggesting similar model fit in comparison with the original factor structure. Exploratory validity tests indicated that the domain-general factor of the bi-factor model appears related to broad executive functioning abilities.
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Acknowledgements
This research was supported by Grant Number R01 MH082865 awarded to Steven W. Evans by the National Institute of Mental Health, and Grant Number R305A130011 awarded to Joshua M. Langberg by the Institute of Education Sciences.
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Stephen J. Molitor, Joshua M. Langberg, Steven W. Evans, Melissa R. Dvorsky, Elizaveta Bourchtein, Laura D. Eddy, Zoe R. Smith, and Lauren E. Oddo declare that they have no conflict of interest.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
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Molitor, S.J., Langberg, J.M., Evans, S.W. et al. Evaluating the Factor Validity of the Children’s Organizational Skills Scale in Youth with ADHD. School Mental Health 9, 143–156 (2017). https://doi.org/10.1007/s12310-016-9205-0
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DOI: https://doi.org/10.1007/s12310-016-9205-0