“…Given this wide range of negative effects on performance associated with age, it should not be surprising that age has been identified as one of the most critical factors in job training and performance suc-cess among air traffic controllers (Collins, Boone, & VanDeventer, 1981;Mathews & Cobb, 1974) and has been of critical concern for defining pilot certification and mandatory retirement of air carrier pilots (Gerathewohl, 1977(Gerathewohl, ,1978a(Gerathewohl, , 1978bHilton Systems, 1994;Hyland, Kay, Deimler, & Gurman, 1994;Kay, Harris, Voros, Hillman, Hyland, & Deimler, 1994). However, one additional age-related factor, the pharmacokinetics of drug clearance, is also of interest with regard to the present study.…”