We conducted site visits and interviews at 15 U.S. high-technology companies, selecting a judgment sample of businesses based on size, industry sector, product mix, and other factors from among the 27 largest employers of physicists during the years 1996-2000.* The sample included four of the five largest employers--Raytheon, Lockheed Martin, IBM, and Lucent--and a range of other companies from the top 27: 3M, Agilent Technologies, Corning, Eastman Kodak, Exxon Mobil, Ford, General Atomics, General Electric, Honeywell Aerospace, Texas Instruments, and Xerox.
*The 27 companies were identified in semiannual surveys of physicists conducted 1996-2000 by the AIP Statistical Research Division.