It's valuable to note that this paper is from 2006, and states:
"Reweighting was based on data collected from incum-
bent ATCSs who took AT-SAT on a research basis; some
of these employees achieved overall scores less than 70
(that was one of the reasons for the reweighting effort – a
belief that incumbent employees should be able to pass
the entry-level selection test)"
"Reweighting was based on data collected from incum- bent ATCSs who took AT-SAT on a research basis; some of these employees achieved overall scores less than 70 (that was one of the reasons for the reweighting effort – a belief that incumbent employees should be able to pass the entry-level selection test)"