Development and Validation of the State-Trait Inventory of Cognitive Fatigue in Community-Dwelling Older Adults

Publication date: Available online 26 August 2016
Source:Archives of Physical Medicine and Rehabilitation
Author(s): Melissa Shuman-Paretsky, Vance Zemon, Frederick W. Foley, Roee Holtzer
ObjectiveTo develop and validate a subjective measure of cognitive fatigue—the State-Trait Inventory of Cognitive Fatigue (STI-CF)—in community-dwelling older adults.DesignScale development and test construction.SettingCommunity-dwelling older adults enrolled in a longitudinal cohort aging study.ParticipantsParticipants (N=175) were healthy, English-speaking, community-dwelling adults, age 65 and above.InterventionsNot applicable.Main Outcome MeasuresSTI-CF total, cognitive fatigue, motivation, mental effort, and boredom summation scores for both state and trait forms.ResultsPrincipal component analysis yielded the expected four components for both state and trait forms: cognitive fatigue, mental effort, motivation, and boredom. All components had good reliability. There was good convergent validity as measured by the strong positive relationship between cognitive fatigue and a subjective measure of general fatigue, even after controlling for depressive symptoms. Greater subjective cognitive fatigue was associated with worse performance on measures thought to be more sensitive to aspects of executive functioning.ConclusionsThe current study developed and established the psychometric properties of a new instrument for the subjective measurement of cognitive fatigue for use in community-dwelling older adults. The STI-CF's relatively brief administration time (less than 10 minutes; M = 5.6, SD = 2.9) and strong psychometric properties support its utility in both research and clinical settings. Future studies should establish the psychometric properties of this scale in other populations and examine its predictive utility for relevant clinical outcomes.



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