The Panel Study of Entrepreneurial Dynamics (PSED) research program is designed to enhance the scientific understanding of how people start businesses. The projects provide valid and reliable data on the process of business formation based on nationally-representative samples of nascent entrepreneurs, those active in business creation. PSED I began with screening in 1998-2000 to select a cohort of 830 with three follow-up interviews. A control group of those not involved in firm creation is available for comparisons. PSED II began with screening in 2005-2006, followed by six yearly interviews. The information obtained includes data on the nature of those active as nascent entrepreneurs, the activities undertaken during the start-up process, and the characteristics of start-up efforts that become new firms.

The interview schedule for the PSED I or II may be replicated in whole or part with the citation Panel Study of Entrepreneurial Dynamics, Institute for Social Research, University of Michigan.

PSED data (including restricted geographic data) are now available through ICPSR.

Access PSED I data

Access PSED II data

If you have trouble accessing these data on ICPSR, please contact ICPSR directly by email at

Dr. Paul Reynolds is available to answer questions about the substance of PSED data sets at For technical issues about the PSED website or datasets, please send an email to or call 734-763-5224. Please be sure to specify that you are calling about PSED.