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The New Person-Specific Paradigm in Psychology
Current Directions in Psychological Science (2009)
  • Peter C.M. Molenaar, Pennsylvania State University
  • Cynthia G. Campbell, Pennsylvania State University
Most research methodology in the behavioral sciences employs interindividual analyses, which provide information about the state of affairs of the population. However, as shown by classical mathematical-statistical theorems (the ergodic theorems), such analyses do not provide information for, and cannot be applied at, the level of the individual, except on rare occasions when the processes of interest meet certain stringent conditions. When psychological processes violate these conditions, the interindividual analyses that are now standardly applied have to be replaced by analysis of intraindividual variation in order to obtain valid results. Two illustrations involving analysis of intraindividual variation of personality and emotional processes are given.
  • Big Five Personality Factors,
  • emotional experiences,
  • ergodic conditions,
  • interindividual variation,
  • intraindividual variation,
  • R-technique
Publication Date
April 1, 2009
Citation Information
Peter C.M. Molenaar and Cynthia G. Campbell. "The New Person-Specific Paradigm in Psychology" Current Directions in Psychological Science Vol. 18 Iss. 2 (2009)
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