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Functional principal components analysis of workload capacity functions
Behavior Research Methods (2013)
  • Devin M Burns, Indiana University - Bloomington
  • Joseph W Houpt, Wright State University - Main Campus
  • James T Townsend, Indiana University - Bloomington
  • Michael J Endres, Indiana University - Bloomington
Workload capacity, an important concept in many areas of psychology, describes processing efficiency across changes in workload. The capacity coefficient is a function across time that provides a useful measure of this construct. Until now most analyses of the capacity coefficient have focused on the magnitude of this function, and often only in terms of a qualitative comparison (greater than or less than one). This work explains how a functional extension of principal components analysis can capture the time extended information of this functional data using a small number of scalar values chosen to emphasize the variance between participants and conditions. This approach provides many possibilities for a more fine grained study of differences in workload capacity across tasks and individuals.
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Citation Information
Devin M Burns, Joseph W Houpt, James T Townsend and Michael J Endres. "Functional principal components analysis of workload capacity functions" Behavior Research Methods Vol. 45 (2013)
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