“…The concepts were demonstr-ated in the labora tory (Charles and Johnson , 1971;Swink , 1972 and1973), and la ter implemented in the field at Luke Air Force Base (Swink e t al ., 1975), and for the Greek Air Force ( Butler , Langford and Futas , 1975 ;and Butler , Bar ber and Futas , 1975). Parallel automated performance measurement work was .…”