“…Likewise, because programs compete for limited resources, there is an incentive to accept low estimates as reasonable. Drezner et al (1993) could not test this assertion, but did report that the average initial cost estimates were systematically understated. This finding is consistent with results reported by others (General Accounting Office [GAO], 1988;Tyson, Harmon, & Utech, 1989;McNichols, McFarland, KcKinney, & Balut, 1984;Christensen, 1994Christensen, ,1996.…”