About the Authors
Robert R. McCrae, PhD, is Research Psychologist at the Gerontology
Research Center of the National Institute on Aging. He received his doc-torate in personality psychology from Boston University in 1976, andhas since conducted research on personality structure, assessment, anddevelopment. His recent work has centered on cross-cultural studies ofpersonality . He has authored or coauthored over 250 articles and chap-ters, and with Paul T. Costa, Jr., he is author of the Revised NEO Per-sonality Inventory .
Paul T. Costa, Jr., PhD, is Chief of the Laboratory of Personality and
Cognition at the National Institute on Aging’s Intramural Research Pro-gram in Baltimore, Maryland. His enduring interests are in the structureand measurement of personality and in lifespan development, psycho -
pathology , and neurobiological bases of personality . He has authored or
coauthored over 300 papers and chapters and has served as President ofAPA Divisions 5 and 20, the Association for Research in Personality , andthe International Society for the Study of Individual Differences.
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