naa a22 4500 510777244 CHVBK 20180411083234.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.3758/s13428-013-0333-2 doi (NATIONALLICENCE)springer-10.3758/s13428-013-0333-2 Functional principal components analysis of workload capacity functions [Elektronische Daten] [Devin Burns, Joseph Houpt, James Townsend, Michael Endres] 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 these 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. Psychonomic Society, Inc., 2013 Workload capacity nationallicence Race model nationallicence Response times nationallicence Principal components analysis nationallicence Systems factorial technology nationallicence Burns Devin Psychological and Brain Sciences, Indiana University, 1101 E 10th St, 47405, Bloomington, IN, USA aut Houpt Joseph Wright State University, 313F Fawcett Hall, 3640 Colonel Glenn Hwy, 45435, Dayton, OH, USA aut Townsend James Psychological and Brain Sciences, Indiana University, 1101 E 10th St, 47405, Bloomington, IN, USA aut Endres Michael Neurobehavioral Research, Inc., 1585 Kapiolani Blvd Ste 130, 96814, Honolulu, HI, USA aut Behavior Research Methods Springer US; http://www.springer-ny.com 45/4(2013-12-01), 1048-1057 45:4<1048 2013 45 13428 https://doi.org/10.3758/s13428-013-0333-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3758/s13428-013-0333-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Burns Devin Psychological and Brain Sciences, Indiana University, 1101 E 10th St, 47405, Bloomington, IN, USA aut NATIONALLICENCE 700 1- Houpt Joseph Wright State University, 313F Fawcett Hall, 3640 Colonel Glenn Hwy, 45435, Dayton, OH, USA aut NATIONALLICENCE 700 1- Townsend James Psychological and Brain Sciences, Indiana University, 1101 E 10th St, 47405, Bloomington, IN, USA aut NATIONALLICENCE 700 1- Endres Michael Neurobehavioral Research, Inc., 1585 Kapiolani Blvd Ste 130, 96814, Honolulu, HI, USA aut NATIONALLICENCE 773 0- Behavior Research Methods Springer US; http://www.springer-ny.com 45/4(2013-12-01), 1048-1057 45:4<1048 2013 45 13428 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer