The relationship between reasoning ability, as indicated by performance on conventional reasoning tests, and working memory capacity was investigated in 4 studies involving 723, 412, 414, and 595 military recruits, respectively. The results demonstrate a consistently high correlation between general reasoning ability and general working-memory…

Individual differences in retention, with an emphasis on their relationship with learning speed and other cognitive factors, were studied in 685 military recruits. In all of the forgetting conditions, the fastest learners remembered more and relearned faster. Results support the existence of individual differences in retention. (SLD)

To clarify the relationships between reaction time (RT) variability and intelligence, RT distributions from 303 male Navy recruits were partitioned into 16 fast-to-slow latency bands calculated with measures of mental ability. The slowest bands (worst trials) were the best predictors of intelligence and working memory performance. (SLD)

Two studies involving 333 military recruits investigate individual differences in time-accuracy functions of inspection time (IT) in terms of psychological models. Two alternative interpretations of IT time-accuracy functions (processing-distraction and processing-speed, and pure processing-speed "cascade" models) are considered in…

The relationship between elementary operations underlying processing of numerical information and performance on psychometrically derived ability measures requiring processing of numbers but defining separate ability factors was studied for 102 Air Force recruits (54 males and 48 females). Patterns of convergent and discriminate relationships for…