[A postdoctoral scholar is] "an individual who has received a doctoral degree (or equivalent) and is engaged in a temporary and defined period of mentored advanced training to enhance the professional skills and research independence needed to pursue his or her chosen career path." — 2007 NIH & NSF
Faculty and PIs

NSF RCR Requirement

Effective January 4, 2010:
"…all institutions submitting proposals to NSF must certify that they have a training plan in place for undergraduate students, graduate students and postdoctoral scholars who will be supported by NSF to conduct research. Although training plans need not be submitted with proposals, they must be provided for review upon request."
—The UNL Office of Research and Economic Development has developed a training plan.