“…Readers who would like more detail are referred to the research articles cited above and to Boudreau (1983aBoudreau ( , 1983bBoudreau ( , 1984, Cascio and Silbey (1979), Cronshaw and Alexander (1985), Hunter, Schmidt, and Coggin (1988), Schmidt (1982a, 1982b), Schmidt and Hunter (1983), Schmidt, Hunter, Outerbridge, and Tratmer (1986), Schmidt, Hunter, and Pearlman (1982), and Schmidt et al (1984). Our purpose here is to make three important points: (a) the economic value of gains from unproved hiring methods are typically quite large, (b) these gains are directly proportional to the size of the increase in validity when moving from the old to the new selection methods, and (c) no other characteristic of a personnel measure is as important as predictive validity.…”