A study was designed to examine relationships of aptitude level to training performance on tasks of varying complexity and to determine if differential job training might be required. A complexity rated training battery with eight tasks (simple/choice monitoring, rifle assembly/disassembly, equipment preparation, map symbols, phonetic alphabet,…

To assess the effects of wide aptitude differences on the acquisition of military knowledges and skills, a sample of 183 Army recruits was divided into three maximally distant aptitude groups on the basis of Armed Forces Qualifying Test (AFQT) scores: high aptitude (AFQT 90-99); middle aptitude (AFQT 45-55); low aptitude (AFQT 10-21). Recruits…

Four major points summarize the findings of studies for Category IV (low ability) Marines and sailors. First, Armed Forces Qualifying Test (AFQT) score is a valid predictor of an enlistee's performance and adjustment in military service. Category IV enlistees are inferior to average enlistees on a variety of measures of military adaptation.…

To provide information on performance and characteristics of effective and ineffective marginal personnel in the Army, a study has been made of approximately 1,500 men with experience ranging up to 20 years in four different Army MOSs. The study included a group of men with Armed Forces Qualification Test scores in the marginal range and a…