The Abilities of Man: Their Nature and Measurement

"The Abilities of Man: Their Nature and Measurement" is a seminal treatise in the fields of psychology and psychometrics, exploring the fundamental characteristics of human intelligence. In this rigorous study, C. Spearman presents his groundbreaking two-factor theory, which identifies a general cognitive factor, known as 'g', underlying all mental performance, complemented by specific factors, or 's', unique to individual tasks. This work represented a major leap forward in the scientific ...