She directs the Institute for the Study of Advanced Development, and its subsidiary, the Gifted Development Center in Denver, Colorado. Over 6,000 children have been assessed at the Gifted Development Center in the last 32 years. She also founded Visual-Spatial Resource. Her Ph.D. is in educational psychology and special education from the University of Southern California. For nine years, she served on the faculty of the University of Denver in counseling psychology and gifted education. She co-chaired the NAGC Task Force on IQ Interpretation, during which research was conducted leading to extended norms on the WISC-IV. She has been studying the psychology and education of the gifted since 1961 and has written over 300 articles, chapters and books, including Counseling the Gifted and Talented, Upside-Down Brilliance: The Visual-Spatial Learner and Advanced Development: A Collection of Works on Gifted Adults.