Abstract
BackgroundThe National Aeronautics and Space Administration-Task Load Index (NASATLX) is a subjective instrument for measuring cognitive load. Originally designed for aviation, it has proven a valid and reliable instrument across disciplines. Despite extensive use, its ability to measure cognitive load in group and individual nursing simulation has yet to be explored. MethodsThis secondary analysis investigates NASA-TLX psychometric properties among 488 surveys completed by learners from a Bachelor's nursing program during individual and group simulation. Psychometric tests included item analysis, Cronbach's alpha, inter-item correlations, and exploratory factor analysis. ResultsNASA-TLX demonstrated acceptable reliability and validity in individual simulation; however, there was less reliability in group simulations. ConclusionAdministration variances across individual and group simulation impact NASATLX validity and reliability.
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