S.E. MacPherson, L.H. Phillips, and S. Della Sala.
  <b>Age, executive function, and social decision making: a
  dorsolateral prefrontal theory of cognitive aging</b>.
  <i>Psychol Aging</i>, 17(4):598-609, 2002.
  <A HREF="http://vis.cs.brown.edu/results/bibtex/MacPherson-2002-AEF.bib">(bibtex:
  MacPherson-2002-AEF)</A>.<br />